@book{18931,
	author = {Lefebvre, J. and Universite de Paris-Sud},
	title = {Transformations infinitesimales conformes et automorphismes de certaines structures presque symplectiques},
	year = {1979},
	series = {Publications Mathematiques D'Orsay; 79-08},
	address = {Orsay, France}
}