@article{article2d498f4c,
title   = {Correlation models of diffuse solar-radiation applied to the city of São Paulo, Brazil},
author = {Oliveira, Amauri Pereira de and Escobedo, João Francisco and Machado, Antonio J and Soares, Jacyra Ramos},
year = {2002},
doi = {10.1016/s0306-2619(01)00040-x},
journal   = {Applied Energy}
}