R Toivonen

Interobserver repeatability and validity of an observation method to assess physical loads imposed on the upper extremities

R Ketola, R Toivonen, E Viikari-Juntura, 2001, Ergonomics.

Effects of two ergonomic aids on the usability of an in-line screwdriver.

R Toivonen, J Freund, E P Takala, 2000, Applied ergonomics.