TY - GEN AU - Levine,Harold TI - Classifying immersions into IR4 over stable maps of 3-manifolds into IR2 T2 - Lecture notes in mathematics SN - 0387159959 PY - 1985/// CY - Berlin PB - Springer-Verlag KW - Differential topology KW - Immersions (Mathematics) KW - Singularities (Mathematics) N1 - Contine bibliografie ER -