Taysayavong L, Lindberg J E and Ivarsson E 2018:  
Digestibility, nitrogen retention, gut environment and visceral organ size in Moo Lath and Large White growing  pigs fed un-fermented and fermented cassava root pulp and soybean pulp. 
 Livestock Research for Rural Development. Volume 30, Article #4. 
 Retrieved 
, from http://www.lrrd.org/lrrd30/1/jan_s30004.html