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, 2015 | 78 | 2015 |

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 | 74 | 2013 |

Boundary Value Problems for Systems of Differential, Difference and Fractional Equations: Positive Solutions J Henderson, R Luca Academic Press, 2015 | 71 | 2015 |

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 | 55 | 2014 |

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 | 49 | 2012 |

Nonexistence of positive solutions for a system of coupled fractional boundary value problems J Henderson, R Luca Boundary Value Problems 2015 (1), 138, 2015 | 46 | 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 |

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 | 36 | 2017 |

Systems of Riemann–Liouville fractional equations with multi-point boundary conditions J Henderson, R Luca Applied Mathematics and Computation 309, 303-323, 2017 | 35 | 2017 |

Positive solutions to a system of semipositone fractional boundary value problems R Luca, A Tudorache Advances in Difference Equations 2014 (1), 179, 2014 | 33 | 2014 |

Existence and multiplicity of positive solutions for a system of higher-order multi-point boundary value problems J Henderson, R Luca Adv. Dyn. Syst. Applic 8, 233, 2013 | 31 | 2013 |

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 | 31 | 2011 |

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 | 29 | 2017 |

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 | 29 | 2011 |

Existence of solutions for sequential fractional integro-differential equations and inclusions with nonlocal boundary conditions B Ahmad, R Luca Applied Mathematics and Computation 339, 516-534, 2018 | 28 | 2018 |

Existence of solutions for a system of fractional differential equations with coupled nonlocal boundary conditions A Bashir, R Luca Fractional Calculus and Applied Analysis 21 (2), 423, 2018 | 26 | 2018 |

Positive solutions for m+ 1-point discrete boundary value problems L Rodica LIBERTAS MATHEMATICA (vol. I-XXXI) 29, 65-82, 2009 | 23 | 2009 |

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 a system of semipositone coupled fractional boundary value problems J Henderson, R Luca Boundary Value Problems 2016, 1, 2016 | 21 | 2016 |

Existence and nonexistence of positive solutions for coupled Riemann-Liouville fractional boundary value problems J Henderson, R Luca, A Tudorache Discrete Dynamics in Nature and Society 2016, 2016 | 21 | 2016 |