@article{Łysakowska:2012,
  author  = "M. Łysakowska and K. Przesławski",
  title   = "Keller?s conjecture on the existence of columns in cube tilings of R^n",
  journal = "Advances in Geometry",
  volume  = "Vol. 12",
  number  = "iss. 2",
  pages   = "329--352",
  year    = "2012",
  note    = "gnow;",
}