Verspohl EJ, Tacke R, Mutschler E, Lambrecht G (1990). "Muscarinic receptor subtypes in rat pancreatic islets: binding and functional studies". Eur. J. Pharmacol. 178 (3): 303–11. PMID2187704. डीओआइ:10.1016/0014-2999(90)90109-J.सीएस1 रखरखाव: एक से अधिक नाम: authors list (link)
Verspohl EJ, Tacke R, Mutschler E, Lambrecht G (1990). "Muscarinic receptor subtypes in rat pancreatic islets: binding and functional studies". Eur. J. Pharmacol. 178 (3): 303–11. PMID2187704. डीओआइ:10.1016/0014-2999(90)90109-J.सीएस1 रखरखाव: एक से अधिक नाम: authors list (link)