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Publications in Math-Net.Ru |
Citations |
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1977 |
| 1. |
V. A. Zalgaller, F. L. Litvin, “A sufficient criterion for the existence of an envelope of characteristics and a cuspidal edge on the enveloping surface of a parametrized family of surfaces”, Izv. Vyssh. Uchebn. Zaved. Mat., 1977, no. 3, 20–23    ; Soviet Math. (Iz. VUZ), 21:3 (1977), 15–18 |
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1975 |
| 2. |
F. L. Litvin, “Determination of the enveloping lines of contact of mutually enveloped surfaces”, Izv. Vyssh. Uchebn. Zaved. Mat., 1975, no. 10, 47–50 ; Soviet Math. (Iz. VUZ), 19:10 (1975), 40–43 |
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