@ARTICLE {, title = {Z myšlienok - Bernard BOLZANO (5. 10. 1781 – 18. 12. 1848)}, author = {Jedinák, Dušan}, journal = {Obzory matematiky, fyziky a informatiky}, year = {2006}, volume = {35}, number = {4}, pages = {22--23}, issn = {1335-4981}, }