1. Alexandrov P. S., Combinatorial Topology,Gostechizdat, Moscow, 1947, 660 pp. (Russian)
2. Aminov Yu. A, Differential geometry and Topology of Curves,Nauka, Moscow, 1987, 160 pp. (Russian)
3. Archangelsky A. V., Ponomariov V. I., First Course of General Topology in Problems and Exercises, Nauka, Moscow, 1974, 424 pp. (Russian); English translation, Kluwer Academic Publishers, 1984.
4. Arnold V. I., Catastrophe Theory, MGU, Moscow, 1983, 80 pp. (Russian); English translation, Springer, 1984.
5. Arnold V. I., Varchenko A. N., and Gusein-Zade S. M., Singularities of Differentiable Mappings. Classification of critical points, Caustics and Wave Fronts, Nauka, Moscow, 1982, 304 pp. (Russian); English translation, Birkhäuser, 1985.