Sawzdargo M, George SR, Nguyen T, Xu S, Kolakowski LF, O'Dowd BF (1997). „A cluster of four novel human G protein-coupled receptor genes occurring in close proximity to CD22 gene on chromosome 19q13.1”. Biochem. Biophys. Res. Commun. 239 (2): 543—7. PMID9344866. doi:10.1006/bbrc.1997.7513.
Sawzdargo M, George SR, Nguyen T, Xu S, Kolakowski LF, O'Dowd BF (1997). „A cluster of four novel human G protein-coupled receptor genes occurring in close proximity to CD22 gene on chromosome 19q13.1”. Biochem. Biophys. Res. Commun. 239 (2): 543—7. PMID9344866. doi:10.1006/bbrc.1997.7513.