1. Rotations, quaternions and double groups;Altmann,1986
2. The conjugacy of human saccadic eye movements;Bains;Vision Research,1992
3. Vector and tensor analysis;Brand,1948
4. Videooculography—an alternative method for measurement of three-dimensional eye movements;Clarke,1991
5. Vertical conjugacy: What coordinate system is appropriate?;Collewijn,1994