1. Interpretation of the acid-base equilibrium of humic acid by a continuous pKa distribution and electrostatic model;Fukushima;Anal. Chim. Acta,1995
2. Humus Chemistry, Genesis, Composition, and Reaction;Stevenson,1994
3. Peat- Industrial Chemistry and Technology;Fuchsman,1980
4. Impact of secondary transformation of peat-moorsh soil on the process of purification of ground water;Szajdak,2010
5. Equilibrium studies of the interactions of Zn(II) and Cu(II) ions with Humic Acid by potentiometric titration, IR and fluorescence Spectroscopy;Costa;South. Braz. J. Chem.,2008