Murillo, Apolonia; Chiquete, Luis, Manuel; Joseph-Nathan, Pedro, Phosphorus, Sulfur and Silicon and the Related Elements, 1990, vol. 53, # 1-4, p. 87 - 101
Murillo, Apolonia; Chiquete, Luis, Manuel; Joseph-Nathan, Pedro, Phosphorus, Sulfur and Silicon and the Related Elements, 1990, vol. 53, # 1-4, p. 87 - 101