Note on eccentricities in tournaments. - Matús Harminc; Jaroslav Ivanco (Graphs Comb., 1994)

On a characterization of graphs by average labellings. - Matús Harminc (Discuss. Math. Graph Theory, 1997)

On strongly connected orientations of graphs. - Matús Harminc (Discuss. Math. Graph Theory, 1999)

A note on kernels and solutions in digraphs. - Matús Harminc; Roman Soták (Discuss. Math. Graph Theory, 1999)

Graphs with average labellings. - Matús Harminc; Roman Soták (Discret. Math., 2001)