Riordan arrays and combinatorial sums R Sprugnoli Discrete Mathematics 132 (1-3), 267-290, 1994 | 380 | 1994 |

On some alternative characterizations of Riordan arrays D Merlini, DG Rogers, R Sprugnoli, MC Verri Canadian Journal of Mathematics 49 (2), 301-320, 1997 | 254 | 1997 |

Perfect hashing functions: A single probe retrieving method for static sets R Sprugnoli Communications of the ACM 20 (11), 841-850, 1977 | 216 | 1977 |

Sequence characterization of Riordan arrays TX He, R Sprugnoli Discrete Mathematics 309 (12), 3962-3974, 2009 | 164 | 2009 |

The Cauchy numbers D Merlini, R Sprugnoli, MC Verri Discrete mathematics 306 (16), 1906-1920, 2006 | 157 | 2006 |

Data mining models for student careers R Campagni, D Merlini, R Sprugnoli, MC Verri Expert Systems with Applications 42 (13), 5508-5521, 2015 | 139 | 2015 |

Riordan arrays and the Abel-Gould identity R Sprugnoli Discrete Mathematics 142 (1-3), 213-233, 1995 | 103 | 1995 |

Lagrange inversion: when and how D Merlini, R Sprugnoli, MC Verri Acta applicandae mathematica 94 (3), 233-249, 2006 | 95 | 2006 |

The method of coefficients D Merlini, R Sprugnoli, MC Verri The American Mathematical Monthly 114 (1), 40-57, 2007 | 80 | 2007 |

Sums of reciprocals of the central binomial coefficients R Sprugnoli Integers 6, 0-0, 2006 | 80 | 2006 |

Identities induced by Riordan arrays A Luzón, D Merlini, MA Morón, R Sprugnoli Linear algebra and its applications 436 (3), 631-647, 2012 | 79 | 2012 |

The Motzkin family E Barcucci, R Pinzani, R Sprugnoli PURE MATHEMATICS AND APPLICATIONS. SER. A 2, 249-279, 1991 | 58 | 1991 |

Some statistics on Dyck paths D Merlini, R Sprugnoli, MC Verri Journal of statistical planning and inference 101 (1-2), 211-227, 2002 | 48 | 2002 |

Left-inversion of combinatorial sums C Corsani, D Merlini, R Sprugnoli Discrete Mathematics 180 (1-3), 107-122, 1998 | 46 | 1998 |

Underdiagonal lattice paths with unrestricted steps D Merlini, DG Rogers, R Sprugnoli, MC Verri Discrete Applied Mathematics 91 (1-3), 197-213, 1999 | 39 | 1999 |

Riordan array proofs of identities in Gould’s book R Sprugnoli Published electronically at http://www. dsi. unifi. it/∼ resp/GouldBK. pdf, 2007 | 38 | 2007 |

An introduction to mathematical methods in combinatorics R Sprugnoli | 36 | 2006 |

The tennis ball problem D Merlini, R Sprugnoli, MC Verri Journal of Combinatorial Theory, Series A 99 (2), 307-344, 2002 | 35 | 2002 |

The random generation of directed animals E Barcucci, R Pinzani, R Sprugnoli Theoretical computer science 127 (2), 333-350, 1994 | 35 | 1994 |

Directed column-convex polyominoes by recurrence relations E Barcucci, R Pinzani, R Sprugnoli TAPSOFT'93: Theory and Practice of Software Development: 4th International …, 1993 | 34 | 1993 |