J. Dijkman

A note on the influence of negative gradients on the energy expenditure of donkeys walking, carrying and pulling loads

J. Dijkman, 1992 .

Effect of density and weight of load on the energy cost of carrying loads by donkeys and ponies

R. Krecek, R. Pearson, P. Wright, 1998, Tropical Animal Health and Production.

The measurement of draught ruminant energy expenditure in the field

J. Dijkman, 1994 .