Howard, I. P.; Wade, N. J. (1996). "Ptolemy's contributions to the geometry of binocular vision". Perception. 25 (10): 1189–201. doi:10.1068/p251189. PMID9027922. S2CID34431898.
Pickwell LD (September 1972). "Hering's law of equal innervation and the position of the binoculus". Vision Res. 12 (9): 1499–507. doi:10.1016/0042-6989(72)90175-7. PMID5073145.
Bahill AT, Ciuffreda KJ, Kenyon R, Stark L (December 1976). "Dynamic and static violations of Hering's law of equal innervation". Am J Optom Physiol Opt. 53 (12): 786–96. doi:10.1097/00006324-197612000-00005. PMID1015527. S2CID11881312.
Howard, I. P.; Wade, N. J. (1996). "Ptolemy's contributions to the geometry of binocular vision". Perception. 25 (10): 1189–201. doi:10.1068/p251189. PMID9027922. S2CID34431898.
Pickwell LD (September 1972). "Hering's law of equal innervation and the position of the binoculus". Vision Res. 12 (9): 1499–507. doi:10.1016/0042-6989(72)90175-7. PMID5073145.
Bahill AT, Ciuffreda KJ, Kenyon R, Stark L (December 1976). "Dynamic and static violations of Hering's law of equal innervation". Am J Optom Physiol Opt. 53 (12): 786–96. doi:10.1097/00006324-197612000-00005. PMID1015527. S2CID11881312.
Howard, I. P.; Wade, N. J. (1996). "Ptolemy's contributions to the geometry of binocular vision". Perception. 25 (10): 1189–201. doi:10.1068/p251189. PMID9027922. S2CID34431898.
Bahill AT, Ciuffreda KJ, Kenyon R, Stark L (December 1976). "Dynamic and static violations of Hering's law of equal innervation". Am J Optom Physiol Opt. 53 (12): 786–96. doi:10.1097/00006324-197612000-00005. PMID1015527. S2CID11881312.