Lin, N. H., Gunn, D. E., Ryther, K. B., Garvey, D. S., Donnelly-Roberts, D. L., Decker, M. W., et al. (1997). Structure-activity studies on 2-methyl-3-(2(S)-pyrrolidinylmethoxy) pyridine (ABT-089): an orally bioavailable 3-pyridyl ether nicotinic acetylcholine receptor ligand with cognition-enhancing properties. Journal Of Medicinal Chemistry, 40(3), 385-90. https://doi.org/10.1021/jm960233u (Original work published 1997)