<html><head></head><body><div class="yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div dir="ltr" data-setdir="false">Dear Sir/Madam,</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Where can I find a pseudopotential for oxygen with a 'hole' in it for the calculation of Xspectra.x (core-loss calculation)?</div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">Regards</div><div dir="ltr" data-setdir="false">Akhil</div><div dir="ltr" data-setdir="false">HBNI, India</div></div></body></html>