Geometry of jet spaces and nonlinear partial differential equations IS Krasilʹshchik, VV Lychagin, AM Vinogradov (No Title), 1986 | 632 | 1986 |

Contact geometry and nonlinear differential equations A Kushner, V Lychagin, V Rubtsov Cambridge University Press, 2007 | 427 | 2007 |

Geometry I: Basic ideas and concepts of differential geometry DV Alekseevskiĭ, AM Vinogradov Birkhäuser, 1991 | 233* | 1991 |

Contact geometry and non-linear second-order differential equations VV Lychagin Russian Mathematical Surveys 34 (1), 149, 1979 | 148 | 1979 |

Introduction to the geometry of nonlinear differential equations AM Vinogradov, IS Krasil’shchik, VV Lychagin Moscow Science, 1986 | 143 | 1986 |

Local classification of non-linear first order partial differential equations VV Lychagin Russian Mathematical Surveys 30 (1), 105, 1975 | 138 | 1975 |

Global Lie–Tresse theorem B Kruglikov, V Lychagin Selecta Mathematica 22, 1357-1411, 2016 | 109 | 2016 |

A classification of Monge-Ampere equations VV Lychagin, VN Rubtsov, IV Chekalov Annales scientifiques de l'École normale supérieure 26 (3), 281-308, 1993 | 109 | 1993 |

Geometry of differential equations B Kruglikov, V Lychagin Handbook of global analysis 1214, 725-771, 2008 | 96 | 2008 |

Singularities of multivalued solutions of nonlinear differential equations, and nonlinear phenomena VV Lychagin Acta Applicandae Mathematica 3, 135-173, 1985 | 68 | 1985 |

Symmetries of distributions and quadrature of ordinary differential equations SV Duzhin, VV Lychagin Acta Applicandae Mathematica 24, 29-57, 1991 | 67 | 1991 |

Invariants of pseudogroup actions: homological methods and finiteness theorem B Kruglikov, V Lychagin International Journal of Geometric Methods in Modern Physics 3 (05n06), 1131 …, 2006 | 52 | 2006 |

Finite dimensional dynamics for evolutionary equations L Valentin, L Olga Nonlinear dynamics 48, 29-48, 2007 | 51 | 2007 |

On sufficient orbits of a group of contact diffeomorphisms VV Lyčagin Mathematics of the USSR-Sbornik 33 (2), 223, 1977 | 45 | 1977 |

Geometry of jet spaces and nonlinear partial differential equations AM Vinogradov, IS Krasil’shchik, VV Lychagin Advanced Studies in Contemporary Mathematics. New York: Gordon and Breach …, 1986 | 43 | 1986 |

On the Blaschke conjecture for 3-webs VV Goldberg, VV Lychagin The Journal of Geometric Analysis 16, 69-115, 2006 | 42 | 2006 |

Contact geometry, measurement, and thermodynamics VV Lychagin Nonlinear PDEs, Their Geometry, and Applications: Proceedings of the Wisła …, 2019 | 41 | 2019 |

Mayer brackets and solvability of PDEs—I B Kruglikov, V Lychagin Differential Geometry and its Applications 17 (2-3), 251-272, 2002 | 39 | 2002 |

Lectures on geometry of differential equations VV Lychagin CNR. Gruppo nazionale per la fisica matematics, 1992 | 39 | 1992 |

Geometric theory of singularities of solutions of nonlinear differential equations VV Lychagin Itogi Nauki i Tekhniki. Seriya" Problemy Geometrii. Trudy Geometricheskogo …, 1988 | 39 | 1988 |