Positive solutions for a system of nonlocal fractional boundary value problems J Henderson, R Luca Fractional Calculus and Applied Analysis 16 (4), 985-1008, 2013 | 65 | 2013 |

On a system of fractional differential equations with coupled integral boundary conditions J Henderson, R Luca, A Tudorache Fractional Calculus and Applied Analysis 18 (2), 361-386, 2015 | 61 | 2015 |

Boundary Value Problems for Systems of Differential, Difference and Fractional Equations: Positive Solutions J Henderson, R Luca Academic Press, 2015 | 60 | 2015 |

Positive solutions for a system of second-order multi-point boundary value problems J Henderson, R Luca Applied Mathematics and Computation 218 (10), 6083-6094, 2012 | 48 | 2012 |

Positive solutions for a system of fractional differential equations with coupled integral boundary conditions J Henderson, R Luca Applied Mathematics and Computation 249, 182-197, 2014 | 47 | 2014 |

Nonexistence of positive solutions for a system of coupled fractional boundary value problems J Henderson, R Luca Boundary Value Problems 2015 (1), 138, 2015 | 39 | 2015 |

Existence and multiplicity of positive solutions for a system of fractional boundary value problems J Henderson, R Luca Boundary Value Problems 2014 (1), 60, 2014 | 37 | 2014 |

Positive solutions for a system of higher-order multi-point boundary value problems J Henderson, R Luca Computers & Mathematics with Applications 62 (10), 3920-3932, 2011 | 32 | 2011 |

Existence of positive solutions for a singular fractional boundary value problem J Henderson, R Luca NONLINEAR ANALYSIS-MODELLING AND CONTROL 22 (1), 99-114, 2017 | 30 | 2017 |

Existence and multiplicity for positive solutions of a system of higher-order multi-point boundary value problems J Henderson, R Luca NoDEA: Nonlinear Differential Equations and Applications, 1-20, 2013 | 29 | 2013 |

Positive solutions to a system of semipositone fractional boundary value problems R Luca, A Tudorache Advances in Difference Equations 2014 (1), 179, 2014 | 27 | 2014 |

Positive solutions for a second-order m-point boundary value problem R Luca Dyn. Contin. Discrete Impuls. Syst. Ser. A Math. Anal 18, 161-176, 2011 | 27 | 2011 |

Systems of Riemann–Liouville fractional equations with multi-point boundary conditions J Henderson, R Luca Applied Mathematics and Computation 309, 303-323, 2017 | 25 | 2017 |

Existence of solutions for a sequential fractional integro-differential system with coupled integral boundary conditions B Ahmad, R Luca Chaos, Solitons & Fractals 104, 378-388, 2017 | 23 | 2017 |

Existence and multiplicity for positive solutions of a multi-point boundary value problem J Henderson, R Luca Applied Mathematics and Computation 218 (21), 10572-10585, 2012 | 22 | 2012 |

Positive solutions for m+ 1-point discrete boundary value problems L Rodica LIBERTAS MATHEMATICA (vol. I-XXXI) 29, 65-82, 2009 | 22 | 2009 |

Existence of positive solutions for a class of higher-order -point boundary value problems R Luca Electronic Journal of Qualitative Theory of Differential Equations 2010 (74 …, 2010 | 20 | 2010 |

Positive solutions for a system of second-order multi-point discrete boundary value problems J Henderson, R Luca Journal of Difference Equations and Applications 18 (9), 1575-1592, 2012 | 19 | 2012 |

An existence result for a nonlinear hyperbolic system R Luca Differential and Integral Equations 8 (4), 887-900, 1995 | 19 | 1995 |

Existence of positive solutions for a second-order m+ 1-point discrete boundary value problem R Luca Journal of Difference Equations and Applications 18 (5), 865-877, 2012 | 18 | 2012 |