^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): 619–632. doi:10.1016/S0092-8674(01)00483-4. PMID11551509.
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.
Robas N, Mead E, Fidock M (2004). "MrgX2 is a high potency cortistatin receptor expressed in dorsal root ganglion". J. Biol. Chem. 278 (45): 44400–44404. doi:10.1074/jbc.M302456200. PMID12915402.
Yang S, Liu Y, Lin AA, et al. (2005). "Adaptive evolution of MRGX2, a human sensory neuron specific gene involved in nociception". Gene. 352: 30–35. doi:10.1016/j.gene.2005.03.001. PMID15862286.