A new upper bound for the total vertex irregularity strength of graphs. - Marcin Anholcer; Maciej Kalkowski; Jakub Przybylo (Discret. Math., 2009)

Vertex-coloring edge-weightings: Towards the 1-2-3-conjecture. - Maciej Kalkowski; Michal Karonski; Florian Pfender (J. Comb. Theory B, 2010)

A New Upper Bound for the Irregularity Strength of Graphs. - Maciej Kalkowski; Michal Karonski; Florian Pfender (SIAM J. Discret. Math., 2011)

The 1-2-3-Conjecture for Hypergraphs. - Maciej Kalkowski; Michal Karonski; Florian Pfender (J. Graph Theory, 2017)