#### Table of contents

Bulg. J. Phys. vol. **21** no. 1-2 (1994)

**On Pseudo-Projective Ricci Symmetric Manifolds**

M.C. Chaki, S.K. Saha

pp. 001-007, [abs, pdf]

**Analytical Model of Neutron Resonance Cross Sections in the Unresolved Energy Region**

T. Jordanov, A. Lukyanov

pp. 008-017, [abs, pdf]

**Particle Number Projection after BCS Variation and Its Influence on the Potential Energy Surface of Fissionable Nuclei**

B. Slavov

pp. 018-027, [abs, pdf]

**An Algorithm for First Turn Steering in Synchrotrons**

D. Dinev

pp. 028-035, [abs, pdf]

**Bolometric Response of YBCO Thin Films to Blackbody Radiation**

N. Tyutyundzhiev

pp. 036-044, [abs, pdf]

**On a Problem of Thermo-Piezoelectricity**

T.K. Munshi, K.K. Kundu, R.K. Mahalanabis

pp. 045-049, [abs, pdf]

**On a Simplified Analysis of the Effective Electron Mass in Quantum Wires of Opto-Electronic Materials in the Presence of a Parallel Magnetic Field**

K.P. Ghatak, D. Bhattacharyya

pp. 050-058, [abs, pdf]

**Low-Field Thermomagnetic Curves of Melt-Spun Nd-Fe-B Ribbons**

O. Popov, S. Nikolov, H. Sassik, M. Mikhov

pp. 059-064, [abs, pdf]

**Monte Carlo Simulation of Inhomogeneous Primary Recrystallization**

I. Iordanova, I. Rupsky, J. Valcheva

pp. 065-072, [abs, pdf]

**Fullerene Production in He, Ne, Ar, Kr and Xe Gas Ambients**

G. Pchelarov, N. Koprinarov, M. Konstantinova

pp. 073-079, [abs, pdf]

**Visible Luminescence of Stain-Etched Germanium**

D. Dimova-Malinovska, N. Tzenov, M. Tzolov

pp. 080-086, [abs, pdf]

**Preparation of Hydrogenated Amorphous Silicon by Homogeneous Chemical Vapour Deposition**

S. Koynov, A. Toneva

pp. 087-095, [abs, pdf]