1. Analysis of the π-electronic structure of infinitely large networks

   • Ying-Duo Gao
   • Haruo Hosoya

   OriginalPaper Pages: 105 - 123

2. Constant-isomer benzenoid series and their polyradical subsets

   • Jerry Ray Dias

   OriginalPaper Pages: 125 - 138

3. Relativistic bond lengthening of UO ₂ ²⁺ and UO₂

   • E. M. van Wezenbeek
   • E. J. Baerends
   • J. G. Snijders

   OriginalPaper Pages: 139 - 155

4. Charge transfer and curve crossings in the [BeH₂O]²⁺ system

   • Maurizio Cossi
   • Maurizio Persico

   OriginalPaper Pages: 157 - 168

5. Derivation and pilot application of a scheme for intermediate Hamiltonians in Fock space

   • S. Koch

   OriginalPaper Pages: 169 - 183