Brain Transcriptome Database (BrainTx)http://rdf.ncbi.nlm.nih.gov/pubmed/

A. Bessis, et.al., Chromosomal localization of the mouse genes coding for alpha 2, alpha 3, alpha 4 and beta 2 subunits of neuronal nicotinic acetylcholine receptor., FEBS letters, 1990, 264
http://rdf.ncbi.nlm.nih.gov/pubmed/2338144