Selected problems of classification of energy sources – What are renewable energy sources?

by Rybár, Radim, Kudelas, Dušan, Beer, Martin
Source: 1. Acta Montanistica Slovaca 1. Roč. 20, č. 3 (2015), s. 172-180 1. 1335-1788

Development of heat storage unit based on the phase change materials for mining machinery with combustion engines

by Beer, Martin, Rybár, Radim, Kaľavský, Michal
Source: 1. Acta Montanistica Slovaca 1. Roč. 21, č. 4 (2016), s. 280-286 1. 1335-1788

Exploitation aspects of Solablock collector as a means of using renewable energy sources in the context of a possible development in the sector of tourism

by Pagáčik, Ján, Rybár, Radim, Horodníková, Jana, Beer, Martin
Source: 1. Acta Geoturistica 1. špeciálne číslo 1. Roč. 4, č. 1 (2013), s. 48-52 1. 1338-2292