1. Anonymous (1986).Methods of Soil Analysis-Physical and Mineralogical Methods, Second Edition. In:Methods of Soil Analysis, part 1. American Society of Agronomic Inc. Soil Science Society of America Inc., Eds Arnold Klute. p. 404.
2. APHA (1985).Standards Methods for the Examination of Water and Wastewater, 16th edition. American Public Health Association, Washington, D.C..
3. Antoun, H.: 1986,Science du sol. Faculté des sciences de l'agriculture et de l'alimentation. Département des sols, Université Laval, p. 5–5 à 5–9.
4. Bastille C., St-Pierre S. et Dubreuil B.: 1989,Manuel des méthodes de laboratoire, juin 1989. INRS-Eau, 2700 rue Einstein, Sainte-Foy, (Qc). G1P 3W, p. 284.
5. Blais, J. F., Tyagi, R. D., Auclair, J. C. and Huang C. P.: 1992,Wat. Sci. Tech. 26(1–2), 197–206.