@article{Korbicz:2007,
  author  = "J. Korbicz",
  title   = "Professor Ryszard Tadeusiewicz a double jubilee",
  journal = "International Journal of Applied Mathematics and Computer Science",
  volume  = "Vol. 17",
  number  = "no 2",
  pages   = "289--290",
  year    = "2007",
}