CCL: Correction of Koopmans ionization potentials

From: Petr Toman <ccl!at!linus.imcm.cas.cz>
Subject: CCL: Correction of Koopmans ionization potentials
Date: Mon, 9 May 2005 15:58:23 +0200 (CEST)

Dear colleagues,
 I heard that the Koopmans ionization potentials (HF method) can be
 corrected by a multiplication factor of about 0.92, but I am not sure it
 is true.
 Could anybody provide me some references to the corrections of Koopmans
 ionization potentials?
 Best regards,
 Petr Toman