@article{Drgas-Burchardt:2019,
  author  = "E. Drgas-Burchardt and A. Drzystek",
  title   = "Improper sum-list colouring of 2-trees",
  journal = "Discrete Applied Mathematics",
  volume  = "Vol. 267",
  pages   = "73--84",
  year    = "2019",
}