1. H. Kaplan, Bulletin of Turkish Geology Engineering, (1976) pp. 29–34.
2. A. Saadia,Anal. Chem., 34 (1962) 1683.
3. Coordinated Research Project Report Between Mineral Research and Exploration, Institute of Turkey and Trento University, Trento, Italy (1991).
4. N. Büget, E. Togay, F. Arinç, Proceedings of III. National Congress on Nuclear Sciences, (1989) pp. 674–678.
5. O. Acar, M. Sc Thesis, METU Mechanical Engineering Department (1988).