Inhibition Kinetics of Acetylcholinesterase and Phosphatases by the Active Constituents of Terminalia arjuna and Tamarindus indica in the Cerebral Ganglion of Lymnaea acuminata, Soni, Neelam, Singh Dinesh Kumar, and Singh Vinay Kumar , Pharmacognosy Journal, February 2017, Volume 9, Issue 2, p.148-156, (2017)