to account for the variation of peak width of diffraction lines with 2theta.
G Caglioti, A Paoletti, FP Ricci. Nuclear Instruments Methods (1958) 3: 223-228.
Hope this helps
Prof. Miguel Gregorkiewitz
Dip Scienze della Terra, Universita
Via delle Cerchia 3, I-53100 SIENA, Europe
fon +39'577'298823 fax 298815
email gregor@unisi.it