Authors: Nifant'eva, TI Shkinev, VM Zavarzina, AG Demin, VV

Citation: Ti. Nifant'Eva et al., Extraction of humic acids in two-phase aqueous polymeric systems, J ANALYT CH, 55(10), 2000, pp. 926-928

Authors: Zavarzina, AG Demin, VV

Citation: Ag. Zavarzina et Vv. Demin, Acid-base properties of humic acids of different origin as seen from the potentiometric titration data, EURAS SOIL, 32(10), 1999, pp. 1115-1122

Authors: Orlov, DS Demin, VV Zavarzina, AG

Citation: Ds. Orlov et al., Interaction between humic acids and heavy metals, DOKL AKAD N, 362(3), 1998, pp. 402-403