@ARTICLE {, title = {O jednom tvrdení, ktoré sa traduje v našich učebniciach}, author = {Hrkota, Klement}, journal = {Obzory matematiky, fyziky a informatiky}, year = {2009}, volume = {38}, number = {4}, pages = {51--54}, issn = {1335-4981}, abstract = {This article focuses on how we are limited by traditional patterns when expressing the motion of a mathematical, physical pendulum.}, }