1. Motion study research;Barnes;Factory Management and Maintenance,1939
2. How shape of pins affects bar-positioning time;Barnes;Factory Management and Maintenance,1939
3. The additivity of universal standard data elements;Buffa;Journal of Industrial Engineering,1956
4. The additivity of universal standard data elements II;Buffa;Journal of Industrial Engineering,1957
5. Motor performance and concurrent cognitive tasks;Cremer;Journal of Motor Behavior,1981