Perspectives in biomechanics :  proceedings of theFirst International Conference on Mechanics in Medicine and Biology, Aachen, West Germany, August 30-September 1, 1978 /  Vol.1.  Part B. 
edited by H. Reul, D.N. Ghista, G. Rau 
 - Chur, Switzerland ;  New York :  Harwood Academic Publishers,  1980 
 - Perspectives in biomechanics ;  v.1 .