Garkavi P.G., Romanov G.V. (1956) Quantitative determination of free amino acids with ninhydrin method of isothermic separation of CO2. Voprosy Meditsinskoi Khimii, 2(5), 390-392.

Garkavi P.G. et al. Quantitative determination of free amino acids with ninhydrin method of isothermic separation of CO2 // Voprosy Meditsinskoi Khimii. - 1956. - V. 2. -N 5. - P. 390-392.

Garkavi P.G. et al., "Quantitative determination of free amino acids with ninhydrin method of isothermic separation of CO2." Voprosy Meditsinskoi Khimii 2.5 (1956): 390-392.

Garkavi, P. G., Romanov, G. V. (1956). Quantitative determination of free amino acids with ninhydrin method of isothermic separation of CO2. Voprosy Meditsinskoi Khimii, 2(5), 390-392.