1. On the role of single excitations in quasi-degenerate perturbation theory

   • Zoran Konkoli
   • Zhi He
   • Dieter Cremer

   Letter Pages: 71 - 74

2. The Beijing four-component density functional program package (BDF) and its application to EuO, EuS, YbO and YbS

   • Wenjian Liu
   • Gongyi Hong
   • Michael Dolg

   Regular Papers Pages: 75 - 83

3. A case against large cluster-induced nonequilibrium solvent effects in supercritical water

   • Huaqiang Luo
   • Susan C. Tucker

   Pages: 84 - 91

4. Relativistic effects in nuclear quadrupole coupling

   • Pekka Pyykkö
   • Michael Seth

   Pages: 92 - 104

5. Solvent effects on tautomerism equilibria in heterocycles

   • F. J. Luque
   • J. M. López-Bes
   • M. Orozco

   Pages: 105 - 113

6. A model VBCI calculation on the state correlation diagram for radical abstraction and addition reactions

   • A. Salikhov
   • H. Fischer

   Pages: 114 - 121

7. Core and valence regions of molecules

   • Sándor Fliszár

   Pages: 122 - 128

8. A molecular design view on the first hyperpolarizability of salicylideneaniline derivatives

   • Yong Zhang
   • Cun-Yuan Zhao
   • Xiao-Zeng You

   Pages: 129 - 134

9. Analogy between real irreducible tensor operator and molecular two-particle operator

   • Shi-Jun Zhong
   • Yin-Gui Wang
   • Qian-Er Zhang

   Pages: 135 - 139