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

M T. Murtha, et.al., Detection of homeobox genes in development and evolution., Proceedings of the National Academy of Sciences of the United States of America, 1991, 88
http://rdf.ncbi.nlm.nih.gov/pubmed/1720547