Elvira Cortez-Baheza, Felix Cruz-Fernandez, Maria I. Hernandez-Alvarez, Fernando Peraza-Luna, Gerardo A. Aguado-Santacruz, Juan C. Serratos-Arevalo, Pedro Posos Ponce, Mario M. Gonzalez-Chavira, Irineo Torres-Pacheco, Lorenzo Guevara-Olvera and Ramon Gerardo Guevara-Gonzalez
International Journal of Botany 4 ( 1 ): 77 - 84 , 2008