Antretter, M.; Färber, S.; Immler, L.; Perktold, M.; Posch, D.; Raschner, C.; Wachholz, F.; Burtscher, M. The Hatfield-System Versus the Weekly Undulating Periodised Resistance Training in Trained Males: Effects of a Third Mesocyle. J. Hum. Sport Exerc. 2019, 14, 599-607.