Omontese B O, Rekwot P I, Rwuaan J S, Ate I U and Makun H J 2013:
Effect of prostaglandin and equine chorionic gonadotrophin on estrus behaviour of Sahel goats during the harmattan season.
Livestock Research for Rural Development. Volume 25, Article #31.
Retrieved
, from http://www.lrrd.org/lrrd25/2/omon25031.htm