how to optimize the volume of the following system: a =15.95 A° b = 19.53 A° c =15.95 A° alpha=90 ° beta =90 ° gamma =144.73 ° -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.quantum-espresso.org/pipermail/users/attachments/20120131/545d4033/attachment.html>