[en] We prove asymptotic completeness using Enss' method for h0(P)+Wsub(S)(Q)+Wsub(L)(Q) where h0:Rsup(n) -> R is a polynomial of degree 2 with lim vertical strokeh0(zeta)vertical stroke +/nabla h0(zeta)vertical stroke = infinite, Wsub(S) a short range potential and Wsub(L) a smooth long range potential. (orig.)