Naik, R. S.; Hartmann, J.; Kiewert, C.; Duysen, E. G.; Lockridge, O.; Klein, J. Effects of Rivastigmine and Donepezil on Brain Acetylcholine Levels in Acetylcholinesterase-Deficient Mice. J Pharm Pharm Sci 2009, 12, 79-85.