<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12pt"><div>Dear Prof. Blaha,</div><div>Please let me know why there is not a program for finding minimum of c/a or b/a ratio with Wien2k Package when we optimize c/a or b/a.</div><div>eplot program can show curve of Energy Vs. c/a but it doesn't find minimum of c/a.</div><div>Please guide me</div><div>With best</div><div>Mahdi</div></div></body></html>