1. Some remarks concerning unique continuation for the Dirac operator

   • Niculae Mandache

   OriginalPaper Pages: 85 - 92

2. A deficiency of Weinberg's quantum mechanics

   • Debendranath Sahoo

   OriginalPaper Pages: 93 - 100

3. Quantum affine algebras and universalR-matrix with spectral parameter

   • Yao-Zhong Zhang
   • M. D. Gould

   OriginalPaper Pages: 101 - 110

4. Quantization of gauge theories with global anomalies

   • P. Mitra

   OriginalPaper Pages: 111 - 115

5. Theory of superselection sectors for generalized Ising models

   • J. R. Reyes Martínez

   OriginalPaper Pages: 117 - 126

6. A note on essential duality

   • Jakob Yngvason

   OriginalPaper Pages: 127 - 141

7. Coherent decay of positronium bose condensate

   • Vladimir Vanyashin

   OriginalPaper Pages: 143 - 149

8. Quantization of U _q [so(2n + 1)] with deformed para-Fermi operators

   • T. D. Palev

   OriginalPaper Pages: 151 - 157

9. R-matrix method for Heisenberg quantum groups

   • V. Hussin
   • A. Lauzon
   • G. Rideau

   OriginalPaper Pages: 159 - 166