The monoid of all injective order preserving partial transformations on a finite chain VH Fernandes Semigroup Forum 62 (2), 178-204, 2001 | 92 | 2001 |

Semigroups of order preserving mappings on a finite chain: a new class of divisors VH Fernandes Semigroup Forum 54 (1), 230-236, 1997 | 63 | 1997 |

The monoid of all injective orientation preserving partial transformations on a finite chain VH Fernandes Communications in Algebra 28 (7), 3401-3426, 2000 | 45 | 2000 |

Congruences on monoids of transformations preserving the orientation on a finite chain VH Fernandes, GMS Gomes, MM Jesus Journal of Algebra 321 (3), 743-757, 2009 | 35 | 2009 |

Curso de álgebra linear e geometria analítica E Giraldes, VHBD Fernandes, MPM Smith | 35 | 1994 |

Presentations for some monoids of partial transformations on a finite chain: a survey VH Fernandes Semigroups, algorithms, automata and languages, 363-378, 2002 | 34 | 2002 |

Presentations for some monoids of injective partial transformations on a finite chain. VH Fernandes, G Gomes, MM Jesus Taylor & Francis, 2004 | 32 | 2004 |

On generators and relations for unions of semigroups IM Araújo, MJJ Branco, VH Fernandes, GMS Gomes, N Ruškuc Semigroup Forum 63 (1), 49-62, 2001 | 29 | 2001 |

Congruences on monoids of order-preserving or order-reversing transformations on a finite chain VH Fernandes, GMS Gomes, MM Jesus Glasgow Mathematical Journal 47 (2), 413-424, 2005 | 28 | 2005 |

Presentations for some monoids of partial transformations on a finite chain VH Fernandes, GMS Gomes, MM Jesus Communications in Algebra® 33 (2), 587-604, 2005 | 27 | 2005 |

On the ranks of semigroups of transformations on a finite set with restricted range VH Fernandes, J Sanwong Algebra Colloquium 21 (03), 497-510, 2014 | 23 | 2014 |

Abelian kernels of some monoids of injective partial transformations and an application M Delgado, VH Fernandes Semigroup Forum 61 (3), 435-452, 2000 | 22 | 2000 |

The cardinal and the idempotent number of various monoids of transformations on a finite chain VH Fernandes, GMS Gomes, MM Jesus Bull. Malays. Math. Sci. Soc.(2) 34 (1), 79-85, 2011 | 21 | 2011 |

Endomorphisms of the semigroup of order-preserving mappings VH Fernandes, MM Jesus, V Maltcev, JD Mitchell Semigroup Forum 81 (2), 277-285, 2010 | 17 | 2010 |

Semigroups of order-preserving mappings on a finite chain: another class of divisors VH Fernandes Izv. Vyssh. Uchebn. Zaved. Mat 3 (478), 51-59, 2002 | 16 | 2002 |

Normally Ordered Inverse Semigroups. VH Fernandes Semigroup Forum 56 (3), 1998 | 16 | 1998 |

The maximal subsemigroups of semigroups of transformations preserving or reversing the orientation on a finite chain I Dimitrova, VH Fernandes, J Koppitz Publicationes Mathematicae Debrecen 81 (1-2), 11-29, 2012 | 14 | 2012 |

The ranks of ideals in various transformation monoids P Zhao, VH Fernandes Communications in Algebra 43 (2), 674-692, 2015 | 13 | 2015 |

On semigroups of endomorphisms of a chain with restricted range VH Fernandes, P Honyam, TM Quinteiro, B Singha Semigroup Forum 89 (1), 77-104, 2014 | 13 | 2014 |

Abelian kernels of monoids of order-preserving maps and of some of its extensions M Delgado, VH Fernandes Semigroup Forum 68 (3), 335-356, 2004 | 13 | 2004 |