Adamczyk, Jakub Grzegorz, Mariusz Mastej, Dariusz Boguszewski, and Dariusz Białoszewski. 2014. “USAGE OF THERMOGRAPHY AS INDIRECT NON-INVASIVE METHOD OF EVALUATION OF PHYSICAL EFFICIENCY. PILOT STUDY”. Pedagogics, Psychology, Medical-Biological Problems of Physical Training and Sports 18 (3):90-95. https://sportpedagogy.org.ua/index.php/PPS/article/view/650.