Arnold, V. I., & Arnolʹd, V. I. (1985). Singularities of differentiable maps. Birkhäuser.
Dyfyniad Arddull ChicagoArnold, V. I., and V. I.;Gusein-Zade Arnolʹd. Singularities of Differentiable Maps. Boston: Birkhäuser, 1985.
Dyfyniad MLAArnold, V. I., and V. I.;Gusein-Zade Arnolʹd. Singularities of Differentiable Maps. Birkhäuser, 1985.
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