@book{11220,
	author = {Haefliger, Andre and Narasimhan, Raghavan and Raghavan, Narasimhan ; jt. ed.},
	title = {Essays on topology and related topics; memoires dedies a Georges de Rham},
	publisher = {Springer-Verlag},
	year = {1970},
	address = {Berlin}
}