E. Allan

Effect of zinc supplementation on growth and body composition of Ugandan preschool children: a randomized, controlled, intervention trial.

J. Tumwine, A. Walker, J. Kikafunda, 1998, The American journal of clinical nutrition.

Use and management of donkeys in peri-urban areas of Ethiopia. Report of phase one of the CTVM/EARO collaborative project, April 1999-June 2000.

M. Asfaw, D. Smith, R. Pearson, 2001 .