1. Structure and activity of acetylcholine;Beers;Nature,1970
2. Davies, K., Chemical Design, Ltd., Botley Works, Oxford, OX2 ONN, England.
3. An attempt to simulate the biogenesis of strychnine. II. Preparation and transformations of 3-(2–4′-pyridylacetamidoethyl) indole;Katrizky;J. Chem. Soc.,1955
4. Conformation of acetylcholine and its amide analogs during their interaction with nicotinic cholinoreceptors;Khromov-Borisov;Dokl. Acad. Nauk SSSR,1976