Tietze's extension theorem. Arenas, Francisco García; Puertas, María Luz — 2002 Divulgaciones Matemáticas
On the determining number and the metric dimension of graphs. Cáceres, José; Garijo, Delia; Puertas, María Luz; Seara, Carlos — 2010 The Electronic Journal of Combinatorics [electronic only]
Jordan's curve theorem. García Arenas, Francisco; Luz Puertas, María — 1998 Divulgaciones Matemáticas