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@article{DAN_1973_212_6_a1, author = {L. F. German and V. P. Soltan and P. S. Soltan}, title = {Certain properties of $\mathrm{d}$-convex sets}, journal = {Doklady Akademii Nauk}, pages = {1276--1279}, publisher = {mathdoc}, volume = {212}, number = {6}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1973_212_6_a1/} }
L. F. German; V. P. Soltan; P. S. Soltan. Certain properties of $\mathrm{d}$-convex sets. Doklady Akademii Nauk, Tome 212 (1973) no. 6, pp. 1276-1279. http://geodesic.mathdoc.fr/item/DAN_1973_212_6_a1/