1. Approximate calculation of the matrix elements of Coulomb and exchange operators for the “core” electrons of the atoms In through Xe

   • Raffaele Montagnani
   • Oriano Salvetti

   OriginalPaper Pages: 1 - 5

2. Molecular vibrations in a gradient extremal path

   • Norihiro Shida
   • Jan E. Almlöf
   • Paul F. Barbara

   OriginalPaper Pages: 7 - 31

3. A CASSCF-CI study of the coordination of ethylene with iron

   • Per -Olof Widmark
   • Björn O. Roos

   OriginalPaper Pages: 33 - 46

4. Series analysis methods in enumeration of chemical isomers

   • Jerzy Cioslowski

   OriginalPaper Pages: 47 - 51

5. A theoretical characterization of the structure formation enthalpy, and fluzional behaviour of B₂H₆ and AlBH₆

   • Vincenzo Barone
   • Camilla Minichino

   OriginalPaper Pages: 53 - 64

6. An extension of the Coulson-Rushbrooke-Longuet-Higgins theorem

   • Stojan Karabunarliev
   • Nikolay Tyutyulkov

   OriginalPaper Pages: 65 - 70

7. Announcement

   Announcement Pages: 71 - 71