Journal of Terramechanics, Volume 49, Issues 3–4, June–August 2012, Page 129, ISSN 0022-4898, 10.1016/j.jterra.2012.03.002
http://www.sciencedirect.com/science/article/pii/S0022489812000213
Journal of Terramechanics, Volume 49, Issues 3–4, June–August 2012, Page 129, ISSN 0022-4898, 10.1016/j.jterra.2012.03.002
http://www.sciencedirect.com/science/article/pii/S0022489812000213