Pekkel' V.A., Akopian Zh.I. (1975) Potentiometric method of determining adenylate deaminase activity. Voprosy Meditsinskoi Khimii, 21(2), 207-211.

Pekkel' V.A. et al. Potentiometric method of determining adenylate deaminase activity // Voprosy Meditsinskoi Khimii. - 1975. - V. 21. -N 2. - P. 207-211.

Pekkel' V.A. et al., "Potentiometric method of determining adenylate deaminase activity." Voprosy Meditsinskoi Khimii 21.2 (1975): 207-211.

Pekkel', V. A., Akopian, Zh. I. (1975). Potentiometric method of determining adenylate deaminase activity. Voprosy Meditsinskoi Khimii, 21(2), 207-211.