1. Graphical representation of tricationic exchanges where one of the cations is the proton;ANDRE;J. Soil Sci.,1975
2. Les propriétés ďéchangeur cationique de la tourbe de sphaignes: Echanges bicationiques entre le proton et un cation métallique;ANDRE;Ann. Agron.,1976
3. The replacing power of potassium on calcium in a peat medium;PUUSTJARVI;Peat and plant News,1968
4. The activity of Ca and K in water and peat cultures;PUUSTJÄRVI;Acta Agralia Fennica,1971