Carter HE, Bhattacharyya PK, Weidman KR, Fraenkel G. «Chemical studies on vitamin BT isolation and characterization as carnitine». Archives of Biochemistry and Biophysics. 38: 405–16. PMID12997117. doi:10.1016/0003-9861(52)90047-7
Spivak JL, Jackson DL. «Pellagra: an analysis of 18 patients and a review of the literature». The Johns Hopkins Medical Journal. 140: 295–309. PMID864902
Carter HE, Bhattacharyya PK, Weidman KR, Fraenkel G. «Chemical studies on vitamin BT isolation and characterization as carnitine». Archives of Biochemistry and Biophysics. 38: 405–16. PMID12997117. doi:10.1016/0003-9861(52)90047-7