German M.D., Fel' V.Ya. (1969) Tryptophan pyrrolase--one of the organospecific liver antigens. Voprosy Meditsinskoi Khimii, 15(1), 53-56.

German M.D. et al. Tryptophan pyrrolase--one of the organospecific liver antigens // Voprosy Meditsinskoi Khimii. - 1969. - V. 15. -N 1. - P. 53-56.

German M.D. et al., "Tryptophan pyrrolase--one of the organospecific liver antigens." Voprosy Meditsinskoi Khimii 15.1 (1969): 53-56.

German, M. D., Fel', V. Ya. (1969). Tryptophan pyrrolase--one of the organospecific liver antigens. Voprosy Meditsinskoi Khimii, 15(1), 53-56.