@book{12126,
	author = {Conference on "Differential Topology and its applications", Jadavpur University Calcutta, Feb., 1983 and Sinha, D. K. ; ed.},
	title = {Lecture notes on catastrophe and bifurcatio theoris},
	publisher = {Jadavpur University},
	year = {1984},
	address = {Calcutta}
}