@article{Nowicka:2004,
  author  = "A. Nowicka and P. Mackiewicz and M. Dudkiewicz and D. Mackiewicz and M. Kowalczuk and J. Banaszak and S. Cebrat and M. Dudek",
  title   = "Representation of mutation pressure and selection pressure by PAM matrices",
  journal = "Applied Bioinformatics",
  volume  = "Vol. 3",
  number  = "no 1",
  pages   = "31--39",
  year    = "2004",
  note    = "www.openmindjournals.com",
}