1. Anatomie und Physiologie der äusseren Augenmuskeln;Muhlendyck,1984
2. ISA Termionilogy Committee;Veronneau-Troutman,2003
3. Current concepts of mechanical and neural factors in ocular motility;Demer;Curr Opin Neurol,2006
4. Mechanics of the orbita;Demer;Dev Ophthalmol,2007