1. Gulevitch, V. S. (1898) About Choline and Neurine (Materials to Chemical Study of the Brain) [in Russian], Universitetskaya Tipografiya, Moscow.
2. Tolkatshchewskaya, N. F. (1954) in V. S. Gulevitch. Selected Works [in Russian], USSR Academy of Sciences Publishers, Moscow, pp. 5–12.
3. Gulevitch, W., and Amiradgibi, S. (1900) Ber. Deutsch. Chem. Gesellsch., 33, 1902–1903.
4. Gulevitch, W. (1911) Z. Physiol. Chem., 73, 434–446.
5. Baumann, L., and Ingvaldsen, T. (1918) J. Biol. Chem., 35, 263–276.