“…where r ij = |q i − q j |, α and β are positive constants for which we consider α > β, and each A (m i m j ) , B (m i m j ) is a positive constant depending of the interactions between the masses m i and m j , respectively with (i, j, k) permuting cyclically in (1,2,3), that is (i, j, k) ∼ (1, 2, 3). The equations of motion associated to the potential (2) are given by q = −∇U (q) ,…”