Khramov V.A., Koltavskova L.S. (1967) Determination of urea in the blood with p-dimethylaminobenzaldehyde. Voprosy Meditsinskoi Khimii, 13(2), 208-210.

Khramov V.A. et al. Determination of urea in the blood with p-dimethylaminobenzaldehyde // Voprosy Meditsinskoi Khimii. - 1967. - V. 13. -N 2. - P. 208-210.

Khramov V.A. et al., "Determination of urea in the blood with p-dimethylaminobenzaldehyde." Voprosy Meditsinskoi Khimii 13.2 (1967): 208-210.

Khramov, V. A., Koltavskova, L. S. (1967). Determination of urea in the blood with p-dimethylaminobenzaldehyde. Voprosy Meditsinskoi Khimii, 13(2), 208-210.