Ouma E, Dione M, Lule P, Roesel K and Pezo D 2014:  
Characterization of smallholder pig production systems in Uganda: constraints and opportunities for engaging with market systems. 
 Livestock Research for Rural Development. Volume 26, Article #56. 
 Retrieved 
, from http://www.lrrd.org/lrrd26/3/ouma26056.htm