@book{18920,
	author = {Nghiem-Xuan-Hai and Universite de Paris-Sud},
	title = {Algebres de Heisenberg et geometrie symplectique des algebres de lie},
	year = {1978},
	series = {Publications Mathematiques D'Orsay; 78-08},
	address = {Orsay, France}
}