Heiber M, Marchese A, Nguyen T, Heng HH, George SR, O'Dowd BF (1997). „A novel human gene encoding a G-protein-coupled receptor (GPR15) is located on chromosome 3”. Genomics. 32 (3): 462—5. PMID8838812. doi:10.1006/geno.1996.0143.
Heiber M, Marchese A, Nguyen T, Heng HH, George SR, O'Dowd BF (1997). „A novel human gene encoding a G-protein-coupled receptor (GPR15) is located on chromosome 3”. Genomics. 32 (3): 462—5. PMID8838812. doi:10.1006/geno.1996.0143.