%0 Journal Article
%A Wolansky, Gershon
%T On the mobility and efficiency of mechanical systems
%J ESAIM: Control, Optimisation and Calculus of Variations
%D 2007
%P 657-668
%V 13
%N 4
%I EDP-Sciences
%U http://www.numdam.org/articles/10.1051/cocv:2007034/
%R 10.1051/cocv:2007034
%G en
%F COCV_2007__13_4_657_0