Ge. Arutyunov et Pb. Medvedev, GENERATING EQUATION FOR R-MATRICES RELATED TO DYNAMICAL-SYSTEMS OF CALOGERO TYPE, Physics letters. A, 223(1-2), 1996, pp. 66-74
By applying the Hamiltonian reduction technique we derive a matrix fir
st order differential equation that yields the classical r-matrices of
the elliptic (Euler-) Calogero-Moser systems as well as their degener
ations.