Citation: W. Sarlet et M. Crampin, The integrability conditions in the inverse problem of the calculus of variations for second-order ordinary differential equations (vol 54, pg 233, 1998), ACT APPL MA, 60(3), 2000, pp. 213-224
Citation: W. Sarlet et al., The integrability conditions in the inverse problem of the calculus of variations for second-order ordinary differential equations, ACT APPL MA, 54(3), 1998, pp. 233-273