@ARTICLE {, title = {Geometricky o geometrických radoch}, author = {Kubáček, Zbyněk}, journal = {Obzory matematiky, fyziky a informatiky}, year = {2007}, volume = {36}, number = {3}, pages = {1--6}, issn = {1335-4981}, abstract = {In the paper the geometric interpretation of the sum of the geometric series is shown.}, }