Efimochkina E.F., Poznanskaia A.A. (1957) Biological synthesis of purine and pyrimidine substances and of mononucleotides. Voprosy Meditsinskoi Khimii, 3(4), 243-254.

Efimochkina E.F. et al. Biological synthesis of purine and pyrimidine substances and of mononucleotides // Voprosy Meditsinskoi Khimii. - 1957. - V. 3. -N 4. - P. 243-254.

Efimochkina E.F. et al., "Biological synthesis of purine and pyrimidine substances and of mononucleotides." Voprosy Meditsinskoi Khimii 3.4 (1957): 243-254.

Efimochkina, E. F., Poznanskaia, A. A. (1957). Biological synthesis of purine and pyrimidine substances and of mononucleotides. Voprosy Meditsinskoi Khimii, 3(4), 243-254.