Pates, R., Watts, A., Uhl, R., & Marsh, D. (1985). Lipid-protein interactions in frog rod outer segment disc membranes. Characterization by spin labels. Biochimica et Biophysica Acta (BBA) - Biomembranes, 814(2), 389-397. doi:10.1016/0005-2736(85)90460-2.