Golubitsky, Martin, 1945-. Stable mappings and their singularities / M. Golubitsky, V. Guillemin. - New York : Springer-Verlag, 1973. - x, 209 pages ; 24 cm. - Graduate texts in mathematics ; 14 . Bibliography : page 200-203. ISBN: 0387900721 038790073X (pbk.) Subjects--Topical Terms: Differentiable mappings.Singularities (Mathematics).Manifolds (Mathematics).