Content of the macromolecular CIF dictionary
Fitzgerald, P. M. D.,
Westbrook, J. D.,
Bourne, P. E.,
McMahon, B.,
Watenpaugh, K. D. and
Berman, H. M.,
International Tables for Crystallography
(2006).
Vol. G,
Section 3.6.4,
pp. 147-148
[ doi:10.1107/97809553602060000738 ]