Ettiene G, Ortega S, Sepúlveda J, Medina D, Buscema I, Sandoval L
Chemistry Department, Agronomy Faculty, Zulia University, Post Office Box 15202, Maracaibo, Venezuela.
Bull Environ Contam Toxicol. 2006 Mar;76(3):415-21. doi: 10.1007/s00128-006-0937-7.