References:

Alsyouf1, El-Thalji. (2008). Maintenance practices in wind power systems: a review and analysis. European Wind Energy conference, April, Brussels, Belgium.
Amirat, Benbouzid, B.B., & W. (2007). Condition Monitoring and Fault Diagnosis in Wind Energy Conversion Systemis: A Review. Journal of Renewable and Sustainable Energy Reviews, Vol.13, Issue 1, 1-39.
Andrawus. (2008). Maintenance optimization for wind turbines. Ph.D thesis, The Robert Gordon University. Retrieved from scholar.google.ca.
Andrawus, Watson, M.K., (2007). Wind Turbine Maintenance Optimization: principles of quantitative maintenance optimization, Journal of Wind Engineering, Vol. 31, Issue 2, 101-110.
Andrawus, J.W., et al. (2006). The Selection of a Suitable Maintenance Strategy for Wind Turbines, Journal of Wind engineering, Vol. 30, Issue 6, 471-486.
Baker, Wang. (1992). Estimating the delay-time distribution of faults in repairable machinery from failure data. IMA Journal of Management Mathematics, Vol.3, Issue 4, 259-281.
Baker, Scarf, & Wang. (1997). A delay-time model for repairable machinery: maximum likelihood estimation of optimum inspection intervals. IMA Journal of Management Mathematics, Vol.8, Issue 1, 83-92.
Besnard, M.P., et al. (2009). An Optimization Framework for Opportunistic Maintenance of Offshore Wind Power System. PowerTech International Conference, July, Bucharest, 1-7.
Besnard, & Bertling. (2010). An Approach for Condition-Based Maintenance Optimization Applied to Wind Turbine Blades. IEEE Transactions on Sustainable Energy, Vol.1 , Issue 2, 77-83.
Byon, & Ding. Optimal Maintenance Strategies for Wind Turbine Systems Under Stochastic Weather Conditions. IEEE Transactions on Reliability, Vol. 59, Issue 2, 393-404.
Crockera, Kumarb. (2000). Age-related maintenance versus reliability centred maintenance: a case study on aero-engines. Journal of Reliability Engineering and System Safety, Vol.67, Issue 2, 113–118.
Coit, Dey. (1999). Analysis of grouped data from field-failure reporting systems, Journal of Reliability Engineering and System Safety, Vol. 65, Issue 2, 95-101.
Ehsani, M.F., Ab., & R. (2005). An Analytical Method for the Reliability Evaluation of Wind Energy Systems. TENCON, IEEE Region 10 Conference, Melbourne, 1-7.
Echavarria, B.H. et al. (2008). Reliability of Wind Turbine Technology Through time. Journal of Solar Energy Engineering, Vol.130, Issue 3, 031005 (8 pages).
Elsen and Scha ̈tzel. (2005). Distribution of Failure Times, DESY June 20.
Garcia, S.B., P. (2006). Intelligent System for Predictive Maintenance: Application to the health condition monitoring of a windturbine gearbox. Journal of Computers in Industry, Vol. 57, Issue 6, 552-568.
Guo, S.W., et al. (2009). Reliability analysis for wind turbines with incomplete failure data collected from after the date of initial installation. Journal of Reliability Engineering & System Safety, Vol. 94, Issue 6, 1057-1063.
Guo, Yang, J.X., S.W. (2009). Wind Turbine Availability Analysis Based On Statistical Data. Sustainable Power Generation and Supply international conference, April, Nanjing, 1-6.
Hameed, Hong, Cho, Ahn, Song. (2009). Condition monitoring and fault detection of wind turbines and related algorithms: A review. Journal of Renewable and Sustainable Energy Reviews, Vol.13, Issue 1, 1-39.
Hassan & Partners, et al. (2001). Concerted Action on offshore Wind Energy in Europe. Retrieved from ec.europa.eu/energy/renewables/wind_energy
Hau. (2005). Wind Turbines, Fundamentals, Technologies, Application, Economics.
Herberta J, I.S., & E. (2007). A review of wind energy technologies. Journal of Renewable and Sustainable Energy Reviews, Vol.11, Issue 6, 1117-1145.
Jardine, & Tsang. (2005). Maintenance, Replacement, and Reliability, Theory and Applications.

Joshi, H.J. (2007). A new method to estimate the O&M costs for the financial planning of the wind power projects based on wind speed. Information and Communication Technology in Electrical Sciences International Conference, Dec, Chennai, India, 45-49.
Kabir, S., & H. (2003). Optimization Model for Opportunistic Replacement Policy Using Genetic Algorithm with Fuzzy Logic Controller. Evolutionary Computation Conference, Vol.4, 2834-2843.
Laggoune, A.Ch., D.A. (2009). Opportunistic policy for optimal preventive maintenance of a multi-component system in continuous operating units. Journal of Computers and Chemical engineering, Vol.33, Issue 9, 1449-1510.
Learney, V.C., Sharpe, D.J., and Infield, D. (1999). Condition monitoring technique for optimization of wind farm performance. International Journal of COMADEM, Vol.2, Issue 1, 5–13.
Lucente. (2008, April). Condition Monitoring System in Wind Turbine Gearbox, Master thesis written at KTH, Royal institute of Technology, Stockholm, Sweden. Retrieved from scholar.google.ca.
Lü, Wu. (2009). Life Cycle Analysis on Economic Operation of Wind Farm. Power and Energy Engineering Asia-Pacific Conference, March, Wuhan, 1-4.
Martínez, E. J., B., S. (2010) LCA sensitivity analysis of a multi-megawatt wind turbine. Journal of Applied Energy, Vol. 87, Issue 7, 2293–2303.
McMillan & Ault. (2008). Specification of Reliability Benchmarks for offshore Wind Farms. European Safety and Reliability Conference (ESREL)/17th Annual Meeting of the Society-for-Risk-Analysis-Europe (SRA-Europe), Sep, 22-25.
Mohamed-Salah, A-K.D., & G. Ali. (1999). A simulation model for opportunistic maintenance strategies. Energy Technologies and Factory Automation International conference, Oct, Barcelona, vol. 1, 703 – 708.
Nakagawa. (1979). Optimum Policies When Preventive Maintenance is Imperfect. IEEE Transactions on Reliability, Vol.R-28, Issue 4, 331-332.
Nilsson, Bertling. (2007). Maintenance Management of Wind Power Systems Using Condition Monitoring Systems –Life Cycle Cost Analysis for Two Case Studies. IEEE Transactions on Energy Conversion, vol.22, Issue 1, 223-229.
Rademakers, H.B. (2003). Assessment and Optimization of Operation and Maintenance of Offshore Wind Turbines. Retrieved from www.ecn.nl/docs/dowec/2003-EWEC-O_M.pdf.
Ramadumar, R. (1993). Engineering reliability: fundamentals and applications.
Rangel-Ramirez, John D.S. (2008). Optimal Risk-based Inspection Planning for Offshore Wind Turbines. International Journal of Steel Structures, Vol.8, Issue 4, 295-303.
Rausand, & A. H. (2004). System Reliability Theory.
Ribrant. (2005/2006). Reliability performance and maintenance - A survey of failures in wind power systems, Master Thesis written at KTH School of Electrical Engineering. Retrieved from scholor.google.ca.
Samhouri, (2009). An Intelligent Opportunistic Maintenance (OM)System: A Genetic Algorithm Approach. Science and Technology for Humanity International Conference, Sept, Toronto, 60-65.
Spahić, U., et al. (2009). Reliability Model of Large Offshore Wind Farms. PowerTech Conference, July, Bucharest, 1-6.
Spinato, Tavner, Bussel, & E. K. (2008). Reliability of wind turbine subassemblies. Journal of Renewable Power Generation, Vol.3, Issue 4, 387-401.
Tavner, Xiang, Spinato. (2007). Reliability Analysis for Wind Turbines. Journal of Wind Energy, Vol.10, Issue 1, 1-18.
Tavner, J. X., Spinato. (2005). Improving the reliability of wind turbine generation and its impact on overall distribution network reliability. Electricity Distribution International Conference, June, Turin, 1-4.
Tian et al. (2010). Condition based maintenance optimization for wind power generation systems under continuous monitoring. Renewable Energy.
Verbruggen. (2003). Wind Turbine Operation & Maintenance based on Condition Monitoring. Retrieved from www.ecn.nl/docs/library/report/2003/c03047.pdf
Vittal and Teboul. (2004). Performance and Reliability Analysis of Wind Turbines using Monte Carlo Methods based on System Transport Theory. Retrieved from www.ewp.rpi.edu.
Walford. (2006). Wind Turbine Reliability: Understanding and Minimizing Wind Turbine Operation and Maintenance Costs. Global Energy Concepts, LLC,Sandia Report.
Wen, Zheng, & Feng. (2009). A review on reliability assessment for wind power. Journal of Renewable and Sustainable Energy Reviews, Vol.13, Issue 9, 2485-2494.
Wilkinson, F.S, T. (2007). Condition Monitoring of Generators & Other Subassemblies in Wind Turbine Drive Trains. IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives, Sept, Cracow, 388–392.
Zhao, Chen & Blaabjerg. (2004). Optimization of Electrical System for a Large DC Offshore Wind Farm by Genetic Algorithm. Nordic Workshop on Power and Industrial Electronics, 037.
(2003) Estimation of Turbine Reliability figures within the DOWEC project, DOWEC Nr. 10048 Issue 4.
National instruments products for wind turbine condition monitoring. Retrieved from zone.ni.com/devzone/cda/tut/p/id/7676.
American wind energy association. www.awea.org/faq
WindStats Newsletter. 2008-2009, 21(4)-22(3), Germany.