Existence results for superlinear semipositone BVP’s V Anuradha, D Hai, R Shivaji Proceedings of the American Mathematical Society 124 (3), 757-763, 1996 | 276 | 1996 |

Diffusive logistic equation with constant yield harvesting, I: Steady states S Oruganti, J Shi, R Shivaji Transactions of the American Mathematical Society 354 (9), 3601-3619, 2002 | 190 | 2002 |

S-shaped bifurcation curves KJ Brown, MMA Ibrahim, R Shivaji Nonlinear Analysis: Theory, Methods & Applications 5 (5), 475-486, 1981 | 190 | 1981 |

Non-negative solutions for a class of non-positone problems A Castro, R Shivaji Proceedings of the Royal Society of Edinburgh Section A: Mathematics 108 (3 …, 1988 | 186 | 1988 |

Persistence in reaction diffusion models with weak Allee effect J Shi, R Shivaji Journal of Mathematical Biology 52 (6), 807-829, 2006 | 184 | 2006 |

An existence result on positive solutions for a class of p-Laplacian systems DD Hai, R Shivaji Nonlinear Analysis: Theory, Methods & Applications 56 (7), 1007-1010, 2004 | 168 | 2004 |

Nonlinear eigenvalue problems with semipositone structure. A Castro, C Maya, R Shivaji Electronic Journal of Differential Equations (EJDE)[electronic only] 2000, 33-49, 2000 | 111 | 2000 |

Nonnegative solutions for a class of radially symmetric nonpositone problems A Castro, R Shivaji Proceedings of the American Mathematical Society 106 (3), 735-740, 1989 | 104 | 1989 |

Multiple positive solutions for classes of -Laplacian equations M Ramaswamy, R Shivaji | 84 | 2004 |

Positive solutions of quasilinear boundary value problems DD Hai, K Schmitt, R Shivaji Journal of mathematical analysis and applications 217 (2), 672-686, 1998 | 73 | 1998 |

A remark on the existence of three solutions via sub-super solutions R Shivaji Nonlinear analysis and applications, 561-566, 2020 | 71 | 2020 |

An existence result on positive solutions for a class of semilinear elliptic systems DD Hai, R Shivaji Proceedings of the Royal Society of Edinburgh Section A: Mathematics 134 (1 …, 2004 | 71 | 2004 |

Existence results for classes of sublinear semipositone problems A Castro, JB Garner, R Shivaji Results in Mathematics 23, 214-220, 1993 | 69 | 1993 |

Uniqueness of non-negative solutions for a semipositone problem with concave nonlinearity A Castro, M Hassanpour, R Shivaji Communications In Partial Differential Equations 20 (11-12), 1927-1936, 1995 | 65 | 1995 |

Uniqueness and stability of nonnegative solutions for semipositone problems in a ball I Ali, A Castro, R Shivaji Proceedings of the American Mathematical Society 117 (3), 775-782, 1993 | 63 | 1993 |

Positive solutions for a class of p-Laplacian systems with multiple parameters J Ali, R Shivaji Journal of mathematical analysis and applications 335 (2), 1013-1019, 2007 | 60 | 2007 |

Nonexistence of radially symmetric nonnegative solutions for a class of semi-positone problems KJ Brown, A Castro, R Shivaji | 58 | 1989 |

Logistic equation with the *p*‐Laplacian and constant yield harvestingS Oruganti, J Shi, R Shivaji Abstract and Applied Analysis 2004 (9), 723-727, 2004 | 55 | 2004 |

Classes of infinite semipositone systems EK Lee, R Shivaji, J Ye Proceedings of the Royal Society of Edinburgh Section A: Mathematics 139 (4 …, 2009 | 51 | 2009 |

Positive solutions for a concave semipositone Dirichlet problem A Castro, R Shivaji | 51 | 1998 |