Christian Kollmar

A perturbation‐based super‐CI approach for the orbital optimization of a CASSCF wave function

Frank Neese, Celestino Angeli, Benjamin Helmich-Paris, 2019, J. Comput. Chem..

Optimization of auxiliary basis sets for the LEDO expansion and a projection technique for LEDO–DFT

Andreas W. Götz, Bernd A. Hess, Christian Kollmar, 2005, J. Comput. Chem..

The coupled electron pair approximation: variational formulation and spin adaptation

Frank Neese, Christian Kollmar, F. Neese, 2010 .

A Chemical Approach to the Orbitals of Organic Polymers

Roald Hoffmann, Christian Kollmar, Christoph Janiak, 1991 .

A new approach to density matrix functional theory

Christian Kollmar, B. A. Hess, Bernd A. Heß, 2003 .