Gastelum-Delgado, Miguel A., Leonel Avendaño-Reyes, Francisco D. Álvarez- Valenzuela, Abelardo Correa-Calderón, César A: Meza-Herrera, Miguel Mellado, and Ulises Macías-Cruz. 2015. “Circannual Estrous Behavior in Pelibuey Ewes under Aridconditions of Northwestern of Mexico”. Revista Mexicana De Ciencias Pecuarias 6 (1):109-18. https://doi.org/10.22319/rmcp.v6i1.4027.