Cumulative Fatigue Symptoms of Dialogue and Data Entry VDU Operators. - Tadeusz Marek; Czeslaw Noworol (HCI (1), 1987)

Muscular loading and subjective ratings of muscular tension by novices when typing with standard and split-design computer keyboards. - Tadeusz Marek; Czeslaw Noworol; Henryk Wos; Waldemar Karwowski; Krzysztof Hamiga (Int. J. Hum. Comput. Interact., 1992)