%0 Journal Article %K Photovoltaics (PV) %K California %K Shading %K Residential rooftops %K Solar access %K Trees %A Ronnen M Levinson %A Hashem Akbari %A Melvin Pomerantz %A Smita Gupta %B Solar Energy %D 2009 %G eng %N 12 %P 2120-2135 %R 10.1016/j.solener.2009.07.016 %T Solar access of residential rooftops in four California cities %U http://www.sciencedirect.com/science/article/pii/S0038092X0900173X %V 83 %8 12/2009