Shaposhnikov A.M., Khalchitsky S.E., Schwartz E.I. (1979) Impairment of phenylalanine and tyrosine metabolism in mongolism . Voprosy Meditsinskoi Khimii, 25(1), 15-19.

Shaposhnikov A.M. et al. Impairment of phenylalanine and tyrosine metabolism in mongolism // Voprosy Meditsinskoi Khimii. - 1979. - V. 25. -N 1. - P. 15-19.

Shaposhnikov A.M. et al., "Impairment of phenylalanine and tyrosine metabolism in mongolism ." Voprosy Meditsinskoi Khimii 25.1 (1979): 15-19.

Shaposhnikov, A. M., Khalchitsky, S. E., Schwartz, E. I. (1979). Impairment of phenylalanine and tyrosine metabolism in mongolism . Voprosy Meditsinskoi Khimii, 25(1), 15-19.