VIOLATION OF THE NONCROSSING RULE: THE HUBBARD HAMILTONIAN FOR BENZENE.Published in:Annals of the New York Academy of Sciences, 1971, v. 172, n. 15, p. 584, doi. 10.1111/j.1749-6632.1971.tb34956.xBy:Heilmann, Ole J.;Lieb, Elliott H.Publication type:Article