The problem of the maximum volumes and particle horizon in the Friedmann universe model S. M. Gong (Kung) OriginalPaper Pages: 1 - 7
The atmospheric extinction at the complejo astronómico el leoncito and the Bosque Alegre station D. MinnitiJ. J. ClariáM. N. Gómez OriginalPaper Pages: 9 - 18
The close approaches and coalescence in triple systems of gravitating masses, I Joanna P. AnosovaVictor V. OrlovLjudmila G. Kiseleva OriginalPaper Pages: 19 - 33
Electric dipole radiation in Einstein and de Sitter cosmological backgrounds and the quasar problem J. A. Souza OriginalPaper Pages: 57 - 66
Nonlinear stability of an infinite cylinder in the presence of a uniform axial magnetic field R. K. ChhabraS. K. Trehan OriginalPaper Pages: 67 - 88
The behaviour of certain helium lines in the P Cygni spectrum Nevena Markova OriginalPaper Pages: 89 - 93
Energy-dependent transport problem with generalized boundary conditions S. A. El WakiiM. S. Abdel KrimE. A. Saad OriginalPaper Pages: 95 - 105
Effects of ions and finite electron density on quasi-electrostatic whistler-mode propagation S. S. Sazhin OriginalPaper Pages: 107 - 115
Gamma-ray emissions from active galaxies M. M. LauE. C. M. YoungK. N. Yu OriginalPaper Pages: 117 - 121
Determination of effective temperatures of the accretion disks in symbiotic stars G. A. Gurzadyan OriginalPaper Pages: 123 - 133
Aromatic hydrocarbons in very small interstellar grains N. C. WickramasingheF. HoyleT. Al-Jubory Letter to the Editor Pages: 135 - 140
Cosmological considerations and the special theory of relativity Vladimír Skalský Letter to the Editor Pages: 145 - 151
Stability analysis of C−N−O Nuclear reaction inside the stars Chen FushengLi Xiangru Letter to the Editor Pages: 153 - 157
A note on the interpretation of electromagnetic four-force S. SelakM. MesserottiP. Zlobec Letter to the Editor Pages: 159 - 161
A repulsive interaction mediated by a spin-2 field? Attila Mészáros Letter to the Editor Pages: 163 - 167
Non-existence of Biachi type-1 perfect fluid cosmological models in a bi-metric theory of gravitation D. R. K. ReddyR. Venkateswarlu Letter to the Editor Pages: 169 - 171
