A. Delisle, D. Imbeau, B. Santos, A. Plamondon, und Y. Montpetit. Applied Ergonomics, 35 (1):
21--28(Januar 2004)http://www.sciencedirect.com/science/article/B6V1W-4BHCHRX-1/2/aeda67fa3e97377239e2eee91e554e4f.
C. Cook, R. Burgess-Limerick, und S. Papalia. International Journal of Industrial Ergonomics, 33 (5):
463--472(Mai 2004)http://www.sciencedirect.com/science/article/B6V31-4BVPW2H-1/2/8a7fcf14dbae8ac1659bac4364c2516e.