Briggs, C. ., Anderson, D. ., Brioni, J. ., Buccafusco, J. ., Buckley, M. ., Campbell, J. ., … Arneric, S. . (1969). Functional characterization of the novel neuronal nicotinic acetylcholine receptor ligand GTS-21 in vitro and in vivo. Pharmacology, Biochemistry, and Behavior, 57(1-2), 231-41. https://doi.org/10.1016/s0091-3057(96)00354-1 (Original work published 1969)