@ARTICLE {, title = {Prof. RNDr. Pavol Ferko, CSc. sedemdesiatročný}, author = {Klima, Ján}, journal = {Obzory matematiky, fyziky a informatiky}, year = {2002}, volume = {31}, number = {1}, pages = {67--68}, issn = {1335-4981}, note = {Jubileum}, }