1. Valence orbital ionization energies for second-row transition elements

   • Roberto Munita
   • Jorge R. Letelier

   Original Investigations Pages: 167 - 171

2. Interatomic interactions in momentum space. Momentum density and kinetic energy in chemical bonding

   • Toshikatsu Koga

   Original Investigations Pages: 173 - 183

3. Inelastic scattering of fast electrons from simple closed shell atoms. I. He, Be

   • Carla Guidotti
   • Andrea Biagi
   • Francis Marinelli

   Original Investigations Pages: 185 - 191

4. Spectral analysis of graphs by cyclic automorphism subgroups

   • Robert A. Davidson

   Original Investigations Pages: 193 - 231

5. The ab initio neglect of differential diatomic overlap method

   • Brian J. Duke
   • Michael P. S. Collins

   Original Investigations Pages: 233 - 244

6. Announcement

   Announcement Pages: 244 - 244