On Nov 20, 2012, at 14:19 , Antonio wrote: > How could I get a Hessian matrix in a text format from a phonon > calculation, for example? you mean, the interatomic force constants in real space? P. --- Paolo Giannozzi, Dept of Chemistry&Physics&Environment, Univ. Udine, via delle Scienze 208, 33100 Udine, Italy Phone +39-0432-558216, fax +39-0432-558222