@book{19530,
	author = {Ruiz, Juan J. Morales},
	title = {Differential Galois theory and non-integrability of Hamiltonian systems},
	publisher = {Birkhauser Verlag},
	year = {1999},
	series = {Progress in Mathematics },
	address = {Basel},
	note = {"Purchased under NBHM grant for the year 1999-2000"}
}