Laube, B; Hirai H, Sturgess M, Betz H, and Kuhse J (1997). „Molecular determinants of antagonists discrimination by NMDA receptor subunits: Analysis of the glutamate binding site on the NR2B subunit”. Neuron18 (3): 493–503. DOI:10.1016/S0896-6273(00)81249-0. PMID9115742.
Laube, B; Hirai H, Sturgess M, Betz H, and Kuhse J (1997). „Molecular determinants of antagonists discrimination by NMDA receptor subunits: Analysis of the glutamate binding site on the NR2B subunit”. Neuron18 (3): 493–503. DOI:10.1016/S0896-6273(00)81249-0. PMID9115742.