Kańtoch M, Dobrowolska H, Jarzabek Z, Jankowski M, Sadowski W, Janicki P. [Distribution and characteristics of Poliovirus strains circulating in Poland in 1968-1972. Genetic variation of strains isolated in various secretion periods and clones isolated from vaccines]. Med Dosw Mikrobiol. 1975;27(4):353–63. PMID: 55526.
[Distribution and characteristics of Poliovirus strains circulating in Poland in 1968-1972. Genetic variation of strains isolated in various secretion periods and clones isolated from vaccines]