Swai E S and Ulicky E 2009: An evaluation of the economic losses resulting from condemnation of cattle livers and loss of carcass weight due to Fasciolosis: a case study from Hai town abattoir, Kilimanjaro region, Tanzania. Livestock Research for Rural Development. Volume 21, Article #186. Retrieved
, from http://www.lrrd.org/lrrd21/11/swai21186.htm