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Kalsi G, Whiting P, Bourdelles BL, Callen D, Barnard EA, Gurling H (February 1998). "Localization of the human NMDAR2D receptor subunit gene (GRIN2D) to 19q13.1-qter, the NMDAR2A subunit gene to 16p13.2 (GRIN2A), and the NMDAR2C subunit gene (GRIN2C) to 17q24-q25 using somatic cell hybrid and radiation hybrid mapping panels". Genomics. 47 (3): 423–425. doi:10.1006/geno.1997.5132. PMID9480759.