Rw. Liu et Jl. Fu, Lie symmetries and conserved quantities of nonconservative nonholonomic systems in phase space, APP MATH ME, 20(6), 1999, pp. 635-640
The invariance and conserved quantities of the nonconservative nonholonomic
systems are studied by introducing the infinitesimal transformations in ph
ase space. The Lie' s symmetrical determining equations are established. Th
e Lie' s symmetrical structure equation is obtained. An example to illustra
te the application of the result is given.