@ARTICLE {, title = {Za Doc. RNDr. Petrom Balážom, CSc.}, author = {Janovič, Jozef}, journal = {Obzory matematiky, fyziky a informatiky}, year = {1998}, volume = {27}, number = {52}, pages = {71--72}, issn = {1335-4981}, note = {Spomíname}, }