1. American Society of Agronomy and Soil Science Society of America 1982: Methods of Soil Analysis, Part 2. Chemical and Microbiological Properties (2nd edition). American Society of Agronomy and Soil Science Society of America, Madison, WI.
2. Blakemore, LC , Searle, PL , and Daly, BK , 1981: Soil Bureau Laboratory Methods. A. Methods for Chemical Analysis of Soils. New Zealand Soil Bureau Scientific Report, 10A (revised). New Zealand Soil Bureau, Wellington.
3. Predicting aqueous aluminium concentrations in natural waters
4. Acidification and recovery of a Spodosol Bs horizon from acidic deposition
5. Aluminum release rates from allophanic and nonallophanic Andosols