J. Appl. Cryst. (1978). 11, 102-113 [ doi:10.1107/S0021889878012844 ]
Scherrer after sixty years: A survey and some new results in the determinati
on of crystallite size
J. I. Langford and A. J. C. Wilson http://scripts.iucr.org/cgi-bin/paper?S0021889878012844