complex-valued scf



Dear cclers,
 I'm interested in doing complex-valued scf calculations.
 Can anyone point me to  recent references (if any) or packages?
 Thank you very much.
 --
 Nguyen Nam Anh   Quebec, Canada
 E-mail: anh at.at chm.ulaval.ca
 WWW: http://promethium.chm.ulaval.ca/~anh/