No. 90 (2010): Editors: Ištvan Vince and Tanyu Bonev PROCEEDINGS OF THE 6TH SREAC MEETING "ASTROPHYSICS AND ASTRODYNAMICS IN BALKAN COUNTRIES IN THE INTERNATIONAL YEAR OF ASTRONOMY" September 28 - 30, 2009, Belgrade, Serbia Z. Knežević, B. Novaković, A. Milani DYNAMICAL CHARACTERISTICS OF HUNGARIA ASTEROIDS [p. 11-18, PDF, 547KB] G. B. Borisov OBSERVATIONS OF THE COMET C/2007 N3 (Lulin) DURING ITS CLOSEST APPROACH TO THE EARTH [p. 19-23, PDF, 355KB] Z. Cvetković, S. Ninković, I. Vince BINARY 15 MONOCEROTIS AND STAR CLUSTER NGC 2264 [p. 25-28, PDF, 418KB] G. Damljanović, N. Pejović A BETTER REFERENCE FRAME BY USING IMPROVED PROPER MOTIONS OF SINGLE AND DOUBLE STARS [p. 29-32, PDF, 383KB] G. I. Eroshkin, V. V. Pashkevich ON THE GEODETIC ROTATION OF THE MAJOR PLANETS, PLUTO, THE MOON AND THE SUN [p. 33-36, PDF, 962KB] E. Popescu, D. Pasca, V. Mioc, N. A. Popescu EQUILIBRIA OF SEELIGER'S PROBLEM. ANALYTIC APPROACH [p. 37-42, PDF, 507KB] Note: The printed version of this paper has a number of errors that have only been corrected in the online version, which is linked above. The editors wish to apologize to the authors and readers for this mistake. D. Kirilova NEUTRINO IN COSMOLOGY [p. 45-60, PDF, 173KB] M. Hafizi, S. Boci A REVIEW ON TEMPORAL LAG CORRELATIONS IN GRBs [p. 61-64, PDF, 71KB] V. Kalinova, F. Petkova, G. Borisov, L. Ilchev DARK MATTER IN THE MILKY WAY GALAXY [p. 65-68, PDF, 586KB] A. Lalović MEASUREMENTS OF VELOCITY DISPERSIONS OF NEARBY GALAXIES [p. 69-72, PDF, 743KB] G. Nikolov, A. Dapergolas, M. Kontizas, V. Golev INDICATION OF STELLAR STRATIFICATION IN STAR CLUSTERS IN THE MAGELLANIC CLOUDS [p. 73-76, PDF, 400KB] S. Samurović THE PROBLEM OF STELLAR ANISOTROPIES IN NEARBY GALAXIES [p. 77-80, PDF, 104KB] S. Samurović, A. Lalović, O. Vince FULL KINEMATIC PROFILES OF NEARBY GALAXIES [p. 81-84, PDF, 166KB] B. Vukotić, M. M. Ćirković CELLULAR AUTOMATION OF GALACTIC HABITABLE ZONE [p. 85-88, PDF, 642KB] I. Kh. Iliev CHALLENGES OF MODERN STELLAR SPECTROSCOPY: DOPPLER IMAGING AND DOPPLER TOMOGRAPHY [p. 91-96, PDF, 151KB] N. Markova MODERN-ERA QUANTITATIVE SPECTROSCOPY OF OB STARS [p. 97-104, PDF, 868KB] E. Rovithis-Livaniou LATEST RESULTS IN THE FIELD OF EXOPLANETS [p. 105-112, PDF, 651KB] N. Alan CCD OBSERVATIONS OF A CLOSE BINARY SYSTEM V1001 Cas [p. 113-116, PDF, 686KB] A. Antonova, G. Hallinan, J. G. Doyle, A. Golden INVESTIGATING MAGNETIC FIELD STRENGTHS AND TOPOLOGIES FOR PULSING ULTRACOOL DWARFS: THE M8.5 DWARF TVLM 513-46546 [p. 117-120, PDF, 684KB] V. M. Čadež INSTABILITIES IN STRATIFIED MAGNETIZED STELLAR ATMOSPHERES [p. 121-124, PDF, 822KB] C. Dumitrache, L. Dumitru A CASE OF FILAMENT -- ACTIVE REGION INTERACTION [p. 125-130, PDF, 202KB] F. Ekmekci THE RESULTS OF PHOTOMETRIC ANALYSES OF LONG-TERM BV OBSERVATIONS OF UX ARIETIS [p. 131-135, PDF, 849KB] V. Ivanov, D. Kjurkchieva LIGHT CURVE SOLUTIONS OF ECLIPSING BINARIES IN THE SMALL MAGELLANIC CLOUD. II. [p. 137-140, PDF, 127KB] M. Jovanović, I. Vince A METHOD FOR DETERMINATION OF WATER VAPOR CONTENT FROM SOLAR SPECTRUM: PRELIMINARY RESULTS [p. 141-146, PDF, 805KB] D. Kjurkchieva, D. Marchev LARGE-AMPLITUDE MODULATIONS OF THE CATACLYSMIC STAR ER UMa [p. 147-150, PDF, 231KB] R. Konstantinova-Antova, M. Auriere, K.-P. Schroder ARE THERE MAGNETICALLY ACTIVE M GIANTS? [p. 151-154, PDF, 576KB] O. Kuzmanovska-Barandovska, O. Atanacković ITERATION FACTORS METHOD FOR MULTILEVEL RADIATIVE TRANSFER: CONVERGENCE PROPERTIES [p. 155-158, PDF, 192KB] H. Markov, I. Vince, N. Markova, G. Djurašević SPECTROSCOPIC OBSERVATIONS OF UU Cas [p. 159-162, PDF, 975KB] I. Milić, P. Kotrč COMPARING OBSERVED PROMINENCE SPECTRA WITH SIMPLE MODELS COMPUTED USING GHV CODE [p. 163-165, PDF, 184KB] E. P. Ovcharov, A. Valcheva, P. Nedialkov, T. Trifonov FOUR AUGUST 2009 NOVAE IN M31 - LIGHT CURVES, COLOURS AND MMRD [p. 167-170, PDF, 24KB] D. Pricopi, M. D. Suran EXPLORATION OF PARAMETER SPACE FOR MODELING COROT AND KEPLER TARGETS WITH CESAM CODE [p. 171-174, PDF, 65KB] L. I. Shestakova, F. K. Rspaev, A. Chalabaev, D. Bram, A. I. Dubovitskij, T. Bonev, V. Golev, E. Le Coarer WIDE-FIELD MEASUREMENTS OF THE VELOCITY FIELD OF THE CIRCUMSOLAR DUSTY PLASMA DURING THE TOTAL SOLAR ECLIPSE ON JULY 22, 2009 [p. 175-178, PDF, 618KB] I. Stateva, E. Niemczura, I. Iliev SPECTROSCOPIC OBSERVATIONS OF Beta CEPHEI STARS AT ROZHEN OBSERVATORY [p. 179-182, PDF, 1002KB] S. Tsvetkova, S. Boeva, R. Zamanov, K. Stoyanov, B. Spassov, A. Antov MULTICOLOUR OBSERVATIONS OF THE FLICKERING OF V425 CASSIOPEIA [p. 183-186, PDF, 711KB] A. Valcheva, E. P. Ovcharov, P. Nedialkov NOVAE SEARCH IN M31 WITH NAO ROZHEN TELESCOPES [p. 187-190, PDF, 499KB] I. Voloshina, V. Metlov PHOTOMETRIC STUDY OF SELECTED SU UMA-TYPE DWARF NOVAE [p. 191-194, PDF, 507KB] M. Zboril STARS SUSPICIOUS OF BRIGHT SPOTS [p. 195-198, PDF, 108KB] T. Bonev RECENT UPGRADES OF THE 2-METER TELESCOPE OF THE NATIONAL ASTRONOMICAL OBSERVATORY - ROZHEN [p. 201-204, PDF, 491KB] V. Čelebonović, J. Souchay IMPACT CRATER FORMATION: A SIMPLE APLLICATION OF SOLID STATE PHYSICS [p. 205-208, PDF, 658KB] D. Kjurkchieva, D. Marchev, B. Borisov, V. Radeva PROPOSITION FOR FOUNDING OF EDUCATIONAL OFFICE OF THE SUB-REGIONAL EUROPEAN ASTRONOMICAL COMMITTEE [p. 209-212, PDF, 228KB] D. Marchev, D. Kyurkchieva, B. Borisov, V. Radeva BULGARIAN ACTIVITIES IN THE PROJECT COSMOS: AN ADVANCED SCIENTIFIC REPOSITORY FOR SCIENCE TEACHING AND LEARNING [p. 213-216, PDF, 590KB] E. P. Ovcharov, N. Petrov, H. Markov, T. Bonev, Z. Donchev PROGRESS IN SUPPRESSING SCATTERED LIGHT INTO THE OPTICAL BEAM PATH OF THE NAO ROZHEN 2\,M TELESCOPE [p. 217-220, PDF, 885KB] V. Radeva INTERNATIONAL SUMMER SCHOOLS "ROZHEN" AND THEIR ROLE IN ASTRONOMY EDUCATION FOR STUDENTS AND TEACHERS [p. 221-224, PDF, 529KB] E. Rovithis-Livaniou, F. Rovithis OLD COINS WITH ASTRONOMICAL SYMBOLS [p. 225-228, PDF, 763KB]