Integral equations and initial value problems for nonlinear differential equations of fractional order N Kosmatov Nonlinear Analysis: Theory, Methods & Applications 70 (7), 2521-2529, 2009 | 137 | 2009 |

Computer simulation of wave collapses in the nonlinear Schrödinger equation NE Kosmatov, VF Shvets, VE Zakharov Physica D: Nonlinear Phenomena 52 (1), 16-35, 1991 | 122 | 1991 |

A boundary value problem of fractional order at resonance. N Kosmatov Electronic Journal of Differential Equations (EJDE)[electronic only] 2010 …, 2010 | 84 | 2010 |

Multi-point boundary value problems on an unbounded domain at resonance N Kosmatov Nonlinear Analysis: Theory, Methods & Applications 68 (8), 2158-2171, 2008 | 79 | 2008 |

Third-order boundary value problems with sign-changing solutions B Hopkins, N Kosmatov Nonlinear Analysis: Theory, Methods & Applications 67 (1), 126-137, 2007 | 66 | 2007 |

A singular boundary value problem for nonlinear differential equations of fractional order N Kosmatov Journal of Applied Mathematics & Computing 29 (1-2), 125, 2009 | 61 | 2009 |

A multi-point boundary value problem with two critical conditions N Kosmatov Nonlinear Analysis: Theory, Methods & Applications 65 (3), 622-633, 2006 | 56 | 2006 |

A multiplicity result for a boundary value problem with infinitely many singularities ER Kaufmann, N Kosmatov Journal of Mathematical Analysis and Applications 269 (2), 444-453, 2002 | 49 | 2002 |

Symmetric solutions of a multi-point boundary value problem N Kosmatov Journal of Mathematical Analysis and Applications 309 (1), 25-36, 2005 | 48 | 2005 |

Eigenvalue comparison for fractional boundary value problems with the Caputo derivative J Henderson, N Kosmatov Fractional Calculus and Applied Analysis 17 (3), 872-880, 2014 | 45 | 2014 |

Initial value problems of fractional order with fractional impulsive conditions N Kosmatov Results in mathematics 63 (3-4), 1289-1310, 2013 | 41 | 2013 |

Countably many solutions of a fourth order boundary value problem N Kosmatov Electronic Journal of Qualitative Theory of Differential Equations 2004 (12 …, 2004 | 37 | 2004 |

A second-order boundary value problem with impulsive effects on an unbounded domain ER Kaufmann, N Kosmatov, YN Raffoul Nonlinear Analysis: Theory, Methods & Applications 69 (9), 2924-2929, 2008 | 32 | 2008 |

Ultrastrong wave collapse VE Zakharov, NE Kosmatov, VF Shvets JETP Lett 49 (8), 1989 | 24* | 1989 |

Countable positive solutions of a conjugate boundary value problem P Eloe, J Henderson, N Kosmatov Comm Appl. Nonlinear Anal 7, 47-55, 2000 | 21 | 2000 |

Multi-point boundary value problems on time scales at resonance N Kosmatov Journal of mathematical analysis and applications 323 (1), 253-266, 2006 | 20 | 2006 |

A symmetric solution of a multipoint boundary value problem at resonance N Kosmatov Abstract and Applied Analysis 2006, 1-11, 2006 | 19 | 2006 |

A second-order singular boundary value problem ER Kaufmann, N Kosmatov Computers & Mathematics with Applications 47 (8-9), 1317-1326, 2004 | 17 | 2004 |

Large amplitude simulation of wave collapse in nonlinear Schrödinger equations NE Kosmatov, IV Petrov, VF Shvets, VE Zakharov Preprint, 1988 | 15 | 1988 |

Semipositone m-point boundary-value problems N Kosmatov Electronic Journal of Differential Equations 2004 (119), 1-7, 2004 | 14 | 2004 |