(en) C. J. Nuttall Jr., « Some notes on the steering of tracked vehicles by articulation. », Journal of Terramechanics
Volume 1, Issue 1, 1964, , p. 38-74 (lire en ligne [PDF])
(en) Edited by D.M. GRAY and D.H. MALE., HANDBOOK OF SNOW: PRINCIPLES, PROCESSES, MANAGEMENT & USE., Toronto, Pergamon Press, , 776 p. (lire en ligne), p. 527