1. ASTM D 3906-97 Standard Test Method for Determination of Relative X-ray Diffraction Intensities of Faujasite-type Zeolite-Containing Materials.
2. The use of infrared spectroscopy and powder X-ray diffraction in the characterization of FCC cracking catalyst under hydro-thermic deactivation process conditions;Balmayor;Revista CENIC,2002