Bariola, Juan; Gonzales, Doris; Tinman, Marcos; Vargas, Jorge; Yañez, Victor(Pontificia Universidad Católica del Perú, Departamento de ingenieria, Lima, PE, 1989)
Beijing Solar Energy Research Institute; Yan Di-min; Xue De-qian; Wang Qui-guo; Ding Xiao-bin; Zhang Jia-bin(Beijing Solar Energy Research Institute, Beijing, CN, 1988)