@article{Filip:2017,
  author  = "R. Filip and J. Leluk",
  title   = "Phylogenetic and variability study on all known hemagglutinin subtypes of influenza A virus",
  journal = "Bio-Algorithms and Med-Systems",
  volume  = "Vol. 13",
  number  = "iss. 3",
  pages   = "153--159",
  year    = "2017",
}