Human aspects at design of mechatronic systemsKaljas, Frid; Källo, R.; Reedik, VelloProceedings of the 9th Mechatronic Forum International Conference held in August 30 - September 1, 2004, Ankara, Turkey2004 / p. 147-157

Realities in interdisciplinary systems designKaljas, Frid; Källo, R.; Reedik, VelloProceedings of Nord Design 2004 : Conference Product Development in Changing Environment held in August 18-20, Tampere, Finland2004 / p. 251-259

Ten years of research into human aspects of bad engineeringHindreus, Tiit; Kaljas, Frid; Källo, R.; Martin, Andres; Tähemaa, Toivo; Reedik, VelloProceedings of the 5th International Conference of DAAAM Baltic : Industrial Engineering - Adding Innovation Capacity of Labour Force and Entrepreneur : 20-22 April 2006, Tallinn, Estonia2006 / p. 35-40 : ill