H. Wieland, Ber. 45, 484 (1912)
P. Barbier and R. Locquin, Compt. Rend. 156, 1443 (1913)
H. Wieland, O. Schlichting, and R. Jacobi, Z. Physiol. Chem. 161, 80 (1926)
C. W. Shoppee, Ann. Repts. (Chem. Soc.,London) 44,184 (1947)
W. Baker, R. F. Curtis, J. F. W. McOmie, L. W. Oliol, and V. Rogers, J. Chem. Soc. 1958, 1007