WORM colorings of planar graphs. - Július Czap; Stanislav Jendrol'; Juraj Valiska (Discuss. Math. Graph Theory, 2017)

Facial L(2, 1)-edge-labelings of trees. - Július Czap; Stanislav Jendrol'; Juraj Valiska (Discret. Appl. Math., 2018)

Conflict -free connections of graphs. - Július Czap; Stanislav Jendrol'; Juraj Valiska (Discuss. Math. Graph Theory, 2018)

Facial packing vertex-coloring of subdivided plane graphs. - Július Czap; Stanislav Jendrol'; Peter Sugerek; Juraj Valiska (Discret. Appl. Math., 2019)

Facial [r.s, t]-colorings of plane graphs. - Július Czap; Stanislav Jendrol'; Peter Sugerek; Juraj Valiska (Discuss. Math. Graph Theory, 2019)

Edge-coloring of plane multigraphs with many colors on facial cycles. - Július Czap; Stanislav Jendrol'; Juraj Valiska (Discret. Appl. Math., 2020)

On the problems of CF-connected graphs. - Michal Stas; Juraj Valiska (Electron. J. Graph Theory Appl., 2023)