def _parse_q2r(self, f):
        """Parse q2r output file

        The format of q2r output is described at the mailing list below:
        http://www.democritos.it/pipermail/pw_forum/2005-April/002408.html
        http://www.democritos.it/pipermail/pw_forum/2008-September/010099.html
        http://www.democritos.it/pipermail/pw_forum/2009-August/013613.html
        https://www.mail-archive.com/pw_forum@pwscf.org/msg24388.html

        """

        natom, dim, epsilon, borns = self._parse_parameters(f)
        fc_dct = {'fc': self._parse_fc(f, natom, dim),
                  'dimension': dim,
                  'dielectric': epsilon,
                  'born': borns}
        return fc_dct
Parse q2r output file

        The format of q2r output is described at the mailing list below:
        http://www.democritos.it/pipermail/pw_forum/2005-April/002408.html
        http://www.democritos.it/pipermail/pw_forum/2008-September/010099.html
        http://www.democritos.it/pipermail/pw_forum/2009-August/013613.html
        https://www.mail-archive.com/pw_forum@pwscf.org/msg24388.html