1. Ontogenesis of cholinesterases;Karczmar,1963
2. Exploring the Vertebrate Central Cholinergic Nervous System;Karczmar,2007
3. The ordeal bean of old calabar: the pageant of Physostigma venenosum in medicine;Holmstedt,1972
4. Anticholinesterase drugs;Koelle;J. Pharmacol. Exp. Therap.,1949
5. The role of amputation and nerve resection in regressing limbs of urodele larvae;Karczmar;J. Exp. Zool.,1946