Plasse D, Galdo E, Bauer B and Verde O 2005: Production of two composite beef cattle herds of Zebu x Criollo Yacumeño and Charolais x Zebu x Criollo Yacumeño on floodable savanna in Beni, Bolivia. II. Cow performance. Livestock Research for Rural Development. Volume 17, Article #83. Retrieved , from http://www.lrrd.org/lrrd17/7/plas17083.htm