Volume 19 (2013)



Spectral changes in the stable shell star 1 Del 
Lubomir Iliev, Jiri Kubat

Distribution of stars in three Magellanic Clouds star clusters NGC1754, NGC2005, NGC2019.
Grigor B. Nikolov, Mary Kontizas, Anastasios Dapergolas, Maya K. Belcheva, Valeri K. Golev, Ioannis Bellas-Velidi

Magnetic activity in stars on the giant branches: Twenty years of observations
R. Konstantinova-Antova, M. Auriere, C. Charbonnel, G. Wade, D. Kolev, A. Antov, S. Tsvetkova, K.-P. Schroder, N.A. Drake, P.Petit, J.-R. de
Medeiros, A. L\'ebre, B. Zhilyaev, I. Verlyuk, O. Svyatogorov, R. E. Gershberg, M. Lovkaya R. Bogdanovski, I. Stateva, R. Cabanac,
S. Avgoloupis, J. Seiradakis and M.E. Contadakis

Preliminary results on optical polarimetry of OJ287 blazar-type AGN
V. Bozhilov, G. Borisov, E. Ovcharov

Paralax effects on microlensing events caused by free-floating planets
L.Hamolli, M.Hafizi, F. De Poalis, A. A. Nucita

Analysis of neutrino fluxes from cosmic rays interactions in the Earth's atmosphere
M. Chizhov, P. Danev

The Supernova SN2011dh: A new member of the rare SN IIb-subtype family
D. Dimitrov, D. Kjurkchieva

Trees annual rings and "Sun-Climate" connection
B. Komitov, P. Duchlev, G. Bjandov, D. Kirilova

Studies of selected voids. Surface photometry of faint galaxies in the direction of 1600+18 in Hercules void.
G. Petrov

Studies of selected voids. Table 1
G. Petrov

Studies of selected voids. Table 2
G. Petrov