1. Agrokhimiya na sluzhbe zemledeliya (Agrochemistry at the Service of Agriculture), Popova, S.I., Ed., Perm, 1981.
2. Luchitskaya, O.A. and Sevost’yanov, S.M., The impact of sewage sludge on soil and plants, Agrokhimiya, 2007, no. 9, pp. 80–84.
3. Selivanovskaya, S.Yu., Kuritsyn, I.N., and Savel’ev, A.A., Evaluation of the effectiveness of the use of unconventional fertilizers based on sewage sludge, Agrokhimiya, 2007, no. 5, pp. 68–75.
4. Peskarev, A.A., Yashin, I.M., and Kasatikov, V.A., Agrochemical properties of sod-podzolic sandy loam soil when using fertilizers based on sewage sludge, Plodorodie, 2011, no. 1, pp. 9–10.
5. Zhigareva, Yu.V. and Merzlaya, G.E., Agroecological assessment of the effectiveness of sewage sludge on sod-podzolic soils of Tver oblast, Plodorodie, 2018, no. 2, pp. 49–51.