1. 1. XIV International Conference on Phosphorus Chemistry, July 12-17, 1998, Cinncinati, Ohio, USA, Meeting program and Abstracts.
2. 2. XV International Conference on Phosphorus Chemistry, July 29-August 3, 2001, Sendai, Japan, Program and Abstracts.
3. 3. IV-th International Sympoosium on Inorganic Phosphate Materials and IMPHOS Workshop on Phosphates : New Uses, New Technologies, July 10-13, 2002, Jena, Germany, Book of Abstracts.
4. 4. M. H. Umbreit, A. Jedrasiewicz, Phosphorus, Sulfur and Silicon, 177, 1815 (2002).
5. 5. M. H. Umbreit, A. Jedrasiewicz, M. Boudraa, J. Inorg. Phosph. Chem. -Phosph. Research Bull. (Japan) 13,243 (2002).