1. On alternative form of the characteristic polynomial and the problem of graph recognition

   • Milan Randić

   Original Investigations Pages: 485 - 498

2. Near-Hartree-Fock energies and geometries of the hydrogen clusters H _n ⁺ (n(odd) ≤ 13) obtained with floating basis sets

   • Hanspeter Huber
   • Daniel Székely

   Original Investigations Pages: 499 - 506

3. “Universal” CNDO/2 method (CNDO/2-U)

   • Abdellatif Baba-Ahmed
   • José Gayoso

   Original Investigations Pages: 507 - 521

4. Use of a size-consistent energy functional in many electron theory for closed shells

   • Sourav Pal
   • M. Durga Prasad
   • Debashis Mukherjee

   Original Investigations Pages: 523 - 536

5. Many-electron effects in the X-ray absorption spectra and the one-particle Green's function

   • Anatoly V. Kondratenko
   • Lev N. Mazalov

   Original Investigations Pages: 537 - 547

6. Fourth-order MB-RSPT calculations of the spectroscopic constants and potential energy curve of F₂

   • Miroslav Urban
   • Jozef Noga
   • Vladimír Kellö

   Original Investigations Pages: 549 - 562

7. Application of second order BWEN perturbation theory to some simple reactions

   • Mark S. Gordon

   Short Communication Pages: 563 - 565

8. Announcement

   Announcement Pages: 566 - 566