Ruiz, Juan J. Morales Differential Galois theory and non-integrability of Hamiltonian systems - Basel Birkhauser Verlag 1999 - xiv, 165p. Index, Bibl. - Progress in Mathematics 179 . "Purchased under NBHM grant for the year 1999-2000" Dewey Class. No.: 512.5 / R934.DG