Madarász, István, and Péter Hunya. 1973. “Human Fatigue As a Phenomenon Modulated by Environmental and Typological Factors : An Approach Based Upon a Complex Test Structure”. Acta Cybernetica 2 (2), 157-63. https://cyber.bibl.u-szeged.hu/index.php/actcybern/article/view/3111.