1. Formation mechanism of complex organic structures in soil habitats;Bollag;Adv. Agron.,1998
2. Carter, D.L., Mortland, M.M., Kemper W.D. 1986. Specific surface. In: A. Klute (Editor), Methods of Soil Analysis: Part 1, 2nd edition. Agronomy Society of America and Soil Science Society of America, Madison, Wisconsin, pp. 413-423.
3. Effect of time and temperature on the chemical composition and crystallization of mixed iron and aluminum species;Colombo;Clays Clay Miner.,1996
4. Efffect of ageing on the nature and interlayering of mixed hydroxyl Al-Fe-Montmorillonite complexes;Colombo;Clay Miner.,1997
5. Chemical composition and physical properties of humic substances;Flaig,1975