@ARTICLE {, title = {Termodynamika piestového parného stroja}, author = {Kováč, Vladimír and Štubňa, Igor}, journal = {Obzory matematiky, fyziky a informatiky}, year = {2006}, volume = {35}, number = {3}, pages = {36--42}, issn = {1335-4981}, abstract = {The paper deals with the first steam engine invented by D. Papin. For instruction purpose, the engine was improved with the valve. Description of the principle and operation of these engines is shown as well as derivating the efficiency of the improved engine.}, }