3Kalaitzakis K, Stavralakis GS. Size optimization of a PV system installed close to sun obstacles[J]. Solar Energy,1996, 57(4): 291--299.
4Borowy Bogdan S, Salameh Ziyad M. Methodology for optimally sizing the combination of a battery bank and PV array in a wind/PV hybrid system[J].IEEE Transaction onEnergy Conversion, 1996, 11(2): 367--375.