C. O. Roelofs

Die optische Lokalisation.

C. O. Roelofs, C. Roelofs, 1935 .

Some aspects of apparent motion

C. O. Roelofs, W. Zeeman, C. Roelofs, 1953 .

Influence of different sequences of optical stimuli on the estimation of duration of a given interval of time

C. O. Roelofs, W. Zeeman, C. Otto Roelofs, 1951 .

Colour phenomena associated with increases and decreases in physical brightness

C. O. Roelofs, W. Zeeman, C. Roelofs, 1957 .

Convergence and depth perception

C. O. Roelofs, 1960 .

Considerations on the visual egocentre

C. O. Roelofs, C. Otto Roelofs, 1959 .