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

Adam. Clauss, et.al., The evolution of a genetic locus encoding small serine proteinase inhibitors., Biochemical and biophysical research communications, 2005, 333
http://rdf.ncbi.nlm.nih.gov/pubmed/15950183