1. Quaia C, Optican LM. Three-dimensional rotations of the eye. In: Levin LA, Nilsson SFE, Ver Hoeve J, Wu SM, editors. Adler’s physiology of the eye. 11th ed. London: Saunders/Elsevier; 2011.
2. Tweed D, Cadera W, Vilis T. Computing three-dimensional eye position quaternions and eye velocity from search coil signals. Vision Res. 1990;30:97–110.
3. Henn V, Straumann D. Three-dimensional eye movement recording for clinical application. J Vestib Res. 1999;9:157–62.
4. Ferman L, Collewijn H, Van den Berg AV. A direct test of Listing’s law--I. Human ocular torsion measured in static tertiary positions. Vision Res. 1987;27:929–38.
5. Wong AM. Listing’s law: clinical significance and implications for neural control. Surv Ophthalmol. 2004;49:563–75.