BALGA, TIBOR, e BRANISLAV ANTALA. 2014. “PLYOMETRIC EXERCISES AS A WAY OF DEVELOPING SPEED-STRENGHT ABILITIES OF SECONDARY SCHOOL STUDENTS AND POSSIBILITIES OF UTILIZATION IN COEDUCATIONAL LESSONS”. Fiep Bulletin - Online 83 (3). https://www.fiepbulletin.net/fiepbulletin/article/view/4639.