1. Tabors, R.D.: ‘Cogeneration: Ownership and operating economics’, Power systems analysis and planning, (Hemisphere Publishing Corporation 1983), p. 252–260
2. Sommer, A.C., Keyes, M.A., and Kaya, A.: ‘Optimization of cogeneration in industrial plants for energy efficient operation’, New direction in energy technology, (Association of Energy Engineers 1985), p. 163–171