^Dong X, Han S, Zylka MJ, Simon MI, Anderson DJ (Sep 2001). "A diverse family of GPCRs expressed in specific subsets of nociceptive sensory neurons". Cell. 106 (5): 619–32. doi:10.1016/S0092-8674(01)00483-4. PMID11551509.
Lembo PM, Grazzini E, Groblewski T, et al. (2002). "Proenkephalin A gene products activate a new family of sensory neuron--specific GPCRs.". Nat. Neurosci. 5 (3): 201–9. doi:10.1038/nn815. PMID11850634.
Takeda S, Kadowaki S, Haga T, et al. (2002). "Identification of G protein-coupled receptor genes from the human genome sequence.". FEBS Lett. 520 (1–3): 97–101. doi:10.1016/S0014-5793(02)02775-8. PMID12044878.
Galés C, Rebois RV, Hogue M, et al. (2005). "Real-time monitoring of receptor and G-protein interactions in living cells". Nat. Methods. 2 (3): 177–84. doi:10.1038/nmeth743. PMID15782186.