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Original Russian Text © S.K. Vodop’yanov, 2006, published in Doklady Akademii Nauk, 2006, Vol. 411, No. 4, pp. 439–443.
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Vodop’yanov, S.K. Differentiability of mappings of carnot manifolds and isomorphism of tangent cones. Dokl. Math. 74, 844–848 (2006). https://doi.org/10.1134/S1064562406060159
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DOI: https://doi.org/10.1134/S1064562406060159