Lee BH, Stelly TC, Colucci WJ, Garcia JG, Gandour RD, Quinn DM (1992)
Inhibition of acetylcholinesterase by hemicholiniums, conformationally constrained choline analogues. Evaluation of aryl and alkyl substituents. Comparisons with choline and (3- hydroxyphenyl)trimethylammonium
Chemical Research in Toxicology 5: 411

Hennis PJ, Cronnelly R, Sharma M, Fisher DM, Miller RD (1984)
Metabolites of neostigmine and pyridostigmine do not contribute to antagonism of neuromuscular blockade in the dog
Anesthesiology 61: 534