• Line digraph iterations and the (d,k) digraph problem 

      Fiol Mora, Miquel Àngel; Andrés Yebra, José Luis; Alegre de Miguel, Ignacio (1984-05)
      Article
      Accés restringit per política de l'editorial
      This paper studies the behavior of the diameter and the average distance between vertices of the line digraph of a given digraph. The results obtained are then applied to the so-called (d, k) digraph problem, that is, ...
    • The Diameter of undirected graphs associated to plane tessellations 

      Andrés Yebra, José Luis; Fiol Mora, Miquel Àngel; Morillo Bosch, M. Paz; Alegre de Miguel, Ignacio (1985)
      Article
      Accés obert
      Thi s paper studi es the di ameter of sorne fami I i es of undirected graphs that can be associated to plane tessel lations which fu1 ly represent them. More precisely, we concentrate upon maximizing the order of the ...