32 citations · 72 across the 7 of their papers we have counts for
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math.DG2010★ 9 cited
The inverse problem for Lagrangian systems with certain non-conservative forces
T. Mestdag, W. Sarlet, M. Crampin
We discuss two generalizations of the inverse problem of the calculus of variations, one in which a given mechanical system can be brought into the form of Lagrangian equations wit…
math.DG2010★ 21 cited
On the generalized Helmholtz conditions for Lagrangian systems with dissipative forces
M. Crampin, T. Mestdag, W. Sarlet
In two recent papers necessary and sufficient conditions for a given system of second-order ordinary differential equations to be of Lagrangian form with additional dissipative for…