Virial theorem in quasi-coordinates and Lie algebroid formalism
  In this paper, the geometric approach to the virial theorem developed in \cite{CFR12} is written in terms of quasi-velocities (see \cite{CNCS07}). A generalization of the virial theorem for mechanical systems on Lie algebroids is also given, using the geometric tools of Lagrangian and Hamiltonian mechanics on the prolongation of the Lie algebroid. 
Jos\'e F. Cari\~nena, Irina Gheorghiu, Eduardo Mart\'inez and   Patr\'icia Santos
math-ph math.MP