Arnold, V. I., Gusein-Zade, S. M., Varchenko, A. N., Porteous, I., Porteous, H., & Reynolds, M. (1985). Singularities of differentiable maps. Boston: Birkhauser.
Παραπομπή Chicago StyleArnold, V. I., S. M. Gusein-Zade, A. N. Varchenko, Ian Porteous, Hugh Porteous, and Mark Reynolds. Singularities of Differentiable Maps. Boston: Birkhauser, 1985.
Παραπομπή MLAArnold, V. I., et al. Singularities of Differentiable Maps. Boston: Birkhauser, 1985.
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