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)