Crandall, W. F., Goldberg, S. J., Wilson, J. S., & McClung, J. R. (1981). Muscle units divided among retractor bulbi muscle slips and between the lateral rectus and retractor bulbi muscles in cat. Experimental Neurology, 71, 251–260.
Reinhard, J., Messias, A., Dietz, K., Mackeben, M., Lakmann, R., Scholl, H. P. N., et al. (2007). Quantifying fixation in patients with Stargardt disease. Vision Research, 47, 2076–2085.
