LRI Library
- N. J. Sonin, Ob opredelenii maximalnych i minimalnych svojstv ploskich krivych, Warsawskye Universitetskye Izvestiya (1886) (1-2), 1-68;
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English translation by R. Matsyuk, About determining maximal and minimal properties of plane curves,Lepage Research Institute Library 1 (2012) 1–42.
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D. Krupka, The Gurevich theorem on invariant tensors: Elementary proof, Lepage Research Institute Library 2 (2017) 1–12.
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D. Krupka, Decompositions of covariant tensor spaces, Lepage Research Institute Library 3 (2017) 1–20.
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D. Krupka, Classification of natural projectors in tensor spaces: (0,3)-tensors, Lepage Research Institute Library 4 (2017) 1–46.
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- D. Krupka, Classification of natural projectors in tensor spaces: (1,2)-tensors, Lepage Research Institute Library 5 (2017) 1–53. PDF
- D. Krupka, Variational forces, Lepage Research Institute Library 6 (2018) 1–38. PDF
- D. Krupka, The Kruskal-Szekeres globalization, Lepage Research Institute Library 7 (2022) 1–39. PDF
