1. Bond-alternating Hückel-Möbius and related, twisted linear, cyclic and helical systems—their molecular orbitals, energies and phase correlation upon dissociation

   • Ying-Nan Chiu

   Original Investigations Pages: 403 - 427

2. General Hartree-Fock solutions for a one dimensional δ-function gas

   • Besnik Sykja
   • Jean-Louis Calais

   Original Investigations Pages: 429 - 442

3. Σ-Factorization method: A new development of molecular-orbital theories based on one-centre approximation of atomic and molecular densities

   • A. W. Niukkanen
   • L. A. Gribov

   Original Investigations Pages: 443 - 460

4. Applicability of a pseudopotential CI method to the investigation of ground and excited states of molecular systems: NaCO, Li₂H, Al₂ and AlH

   • Gianfranco Pacchioni

   Original Investigations Pages: 461 - 475

5. An ab initio calculation of the dissociation C₂H₂(¹Σ⁺) → C₂H(²Σ⁺) + H(²S)

   • Stefano Polezzo
   • Mario Raimondi
   • Massimo Simonetta

   Short Communication Pages: 477 - 481

6. Announcement

   Announcement Pages: 483 - 483

7. Announcement

   Announcement Pages: 484 - 484