TY  - JOUR
AU  - Wolansky, Gershon
TI  - On the mobility and efficiency of mechanical systems
JO  - ESAIM: Control, Optimisation and Calculus of Variations
PY  - 2007
SP  - 657
EP  - 668
VL  - 13
IS  - 4
PB  - EDP-Sciences
UR  - http://www.numdam.org/articles/10.1051/cocv:2007034/
DO  - 10.1051/cocv:2007034
LA  - en
ID  - COCV_2007__13_4_657_0
ER  -