@ARTICLE {, title = {Profesor RNDr. Stanislav Ondrejka, DrSc. - sedemdesiatnik}, author = {Krajčo, Ján}, journal = {Obzory matematiky, fyziky a informatiky}, year = {2003}, volume = {32}, number = {2}, pages = {63--65}, issn = {1335-4981}, note = {Jubileum}, }