Neese, F.; Olbrich, G. Efficient Use of the Resolution of the Identity Approximation in Time-Dependent Density Functional Calculations with Hybrid Density Functionals. Chemical Physics Letters 2002, 362, 170–178.

Bachler, V.; Olbrich, G.; Neese, F.; Wieghardt, K. Theoretical Evidence for the Singlet Diradical Character of Square Planar Nickel Complexes Containing Two o-Semiquinonato Type Ligands. Inorganic Chemistry 2002, 41, 4179–4193.