1. Artem’eva, Z.S., Organicheskoe veshchestvo i granulometricheskaya sistema pochvy (Organic Matter and Granulometric Soil System), Moscow, 2010.
2. Travnikova, L.S., Patterns of humus accumulation: new data and their interpretation, Eur. Soil Sci., 2002, vol. 35, no. 7, p. 737.
3. Travnikova, L.S. and Artem’eva, Z.S., Physical fractioning of soils organic matter aiming to research its biodegradation resistance, in Ekologiya i pochvy (Izbr. lektsii 10-i Vseros. shkoly) (Ecology and Soils: Selected Lectures of the 10th All-Russian School), Pushchino, 2001, vol. 4.
4. Travnikova, L.S., Sileva, T.M., Ryzhova, I.M., and Artem’eva, Z.S., Microaggregation and stability of organic matter in the forest-steppe chernozems of the Volga Region, Eur. Soil Sci., 2006, vol. 39, no. 6, p. 640.
5. Travnikova, L.S., Sileva, T.M., Ryzhova, I.M., et al., Microagregates components of Volga Region forest-steppe chernozem, Agrokhim., 2006, no. 8.