Laila, I. A., S. Nashwa, and N. S. Abed-Elshafy. “Influence of Counter Cation on the Thermal Stability,the Acidity and the Catalytic Properties in the Dehydration of Tert-Butanol over 12-Molybdophosphates”. Hungarian Journal of Industry and Chemistry, vol. 34, no. 1, Sept. 2006, doi:10.1515/112.