Group Connectivity and Group Coloring: Small Groups versus Large Groups. - Rikke Langhede; Carsten Thomassen (Electron. J. Comb., 2020)

Exponentially many Z5-colorings in simple planar graphs. - Rikke Langhede; Carsten Thomassen (Discret. Math., 2021)

Group coloring and group connectivity with non-isomorphic groups of the same order. - Rikke Langhede; Carsten Thomassen (Eur. J. Comb., 2024)