N Halpern

Keyboard design through physiological strain measurements.

W Rohmert, P Zipp, E Haider, 1983, Applied ergonomics.

[Ergonomic organization of keyboards].

W Rohmert, P Zipp, E Haider, 1981, Zentralblatt fur Arbeitsmedizin, Arbeitsschutz, Prophylaxe und Ergonomie.