Fredriksson R, Lagerstrom MC, Hoglund PJ, Schioth HB (2002). „Novel human G protein-coupled receptors with long N-terminals containing GPS domains and Ser/Thr-rich regions”. FEBS Lett. 531 (3): 407—14. PMID12435584. doi:10.1016/S0014-5793(02)03574-3.
Fredriksson R, Hoglund PJ, Gloriam DE, Lagerstrom MC, Schioth HB (2003). „Seven evolutionarily conserved human rhodopsin G protein-coupled receptors lacking close relatives”. FEBS Lett. 554 (3): 381—8. PMID14623098. doi:10.1016/S0014-5793(03)01196-7.
Fredriksson R, Lagerstrom MC, Hoglund PJ, Schioth HB (2002). „Novel human G protein-coupled receptors with long N-terminals containing GPS domains and Ser/Thr-rich regions”. FEBS Lett. 531 (3): 407—14. PMID12435584. doi:10.1016/S0014-5793(02)03574-3.
Fredriksson R, Hoglund PJ, Gloriam DE, Lagerstrom MC, Schioth HB (2003). „Seven evolutionarily conserved human rhodopsin G protein-coupled receptors lacking close relatives”. FEBS Lett. 554 (3): 381—8. PMID14623098. doi:10.1016/S0014-5793(03)01196-7.