Carter HE, Bhattacharyya PK, Weidman KR, Fraenkel G. Chemical studies on vitamin BT isolation and characterization as carnitine. Archives of Biochemistry and Biophysics. July 1952, 38 (1): 405–16. PMID 12997117. doi:10.1016/0003-9861(52)90047-7.
Carter HE, Bhattacharyya PK, Weidman KR, Fraenkel G. Chemical studies on vitamin BT isolation and characterization as carnitine. Archives of Biochemistry and Biophysics. July 1952, 38 (1): 405–16. PMID 12997117. doi:10.1016/0003-9861(52)90047-7.