1. Sigma receptors and their ligands: the sigma enigma;Abou-Gharbia;Ann. Rep. Med. Chem.,1993
2. Progress in σ receptor research;Wyrick;Drugs Fut.,1995
3. Sigma-1 and sigma-2 receptors are expressed in a wide variety of human and rodent tumor cell lines;Vilner;Cancer Res.,1995
4. Novel piperidine σ receptor ligands as potential antipsychotic drugs;Gilligan;J. Med. Chem.,1992
5. E-5842: a new potent and preferential sigma ligand. Pharmacological preclinical profile;Guitart;CNS Drug Rev.,1998