Special astrophysical observatory RAS, Russia

G2Elab, France

Institute of Physics, St. Petersburg State University, Russia

Faculty of Mathematics, University of Belgrade, Serbia

Observatoire de Paris, France

University of Athens, Faculty of Physics, Department of Astrophysics,

Astronomy and Mechanics, Greece

Department of Astronomy, Faculty of Mathematics, University of Belgrade, Serbia

Physics and Astronomy Department, College of Science, King Saud University, Saudi Arabia

LESIA, Observatoire de Paris, France

Astronomical Observatory Belgrade, Serbia

Astronomical Observatory Belgrade, Serbia

G2Elab, France

Atomic Physics Laboratory (040), Vinča Institute of Nuclear Sciences,

Serbia

Atomic Physics Laboratory (040), Vinča Institute of Nuclear Sciences, Serbia

Technical University - Sofia, Bulgaria

Astronomical Observatory Belgrade, Serbia

Faculty of Physics, National and Kapodistrian University of Athens,

Greece

Dark Cosmology Centre, Niels Bohr Institute, Denmark

Departament of Optics and Spectroscopy of St. Petersburg University,

Russia

Astronomical Observatory Belgrade, Serbia

University of Belgrade, Faculty of Physics, Serbia

National Institute for Space Research, Brazil

Faculty of Sciences of Bizerte, Tunisia

Departamento de Física y Astronomía, Facultad de Ciencias, Universidad de Valparaíso, Chile

Central Astronomical Observatory of RAS, Russia

Strasbourg Observatory, France

The Argelander Institute for Astronomy (AIfA) at the University of Bonn, Germany

Faculté des Siences de Bizerte, Tunisia

Centre de Recherche Astrophysique de Lyon, France

Ghent University, Belgium

Department of Astronomy, Faculty of Mathematics, University of Belgrade, Serbia

Astronomical Observatory Belgrade, Serbia

Astronomical Observatory Belgrade, Serbia

Department of Physics Saint-Petersburg University, Russia

Institute for Geophysics, Serbia

Department of Astronomy, Faculty of Mathematics, University of Belgrade, Serbia

Astronomical Observatory Belgrade, Serbia

Faculty of Mathematics, University of Vienna, Austria

Institute for Astro- and Particle Physics - University of Innsbruck, Austria

Belgian Institute for Space Aeronomy, Belgium

Dipartimento di Fisica e Astronomia, Università di Firenze, Italy

Faculty of Physics, National and Kapodistrian University of Athens,

Greece

Astronomical observatory of Strasbourg, France

INAF - Osservatorio Astronomico di Padova, Italy

Physics Department, Faculty of Sciences, University of Ouargla, Algeria

Institute of Physics Belgrade, Serbia

Astronomical Observatory Belgrade, Serbia

Astronomical Observatory Belgrade, Serbia

Instituto de Astrofísica de Canarias, Spain

Institute of Physics Belgrade, Serbia

Department of Physics and Astronomy, University College London, United

Kingdom

Dipartimento di Fisica - Università di Roma ”La Sapienza”, Italy

Astronomical Observatory Belgrade, Serbia

Dipartimento di Fisica e Astronomia, Università di Padova, Italy

Faculty of Science, University of Banjaluka, Republic of Srpska, B&H

Department of Astronomy, Kyoto University, Japan

Institute of Astronomy RAS, Russia

Observatoire de Paris, LERMA, France

Università di Roma ”La Sapienza” - Dipartimento di Fisica, Italy

Taras Shevchenko National University of Kyiv, Ukraine

University of Kragujevac, Faculty of Science, Department of Physics, Serbia

Astronomical Observatory Belgrade, Serbia

Argelander Institut fuer Astronomie, Universitaet Bonn, Germany

Department of Astronomy, Faculty of Mathematics, University of Belgrade, Serbia

Institute of Physics Belgrade, Serbia

Astronomical Observatory Belgrade, Serbia

Weizmann Institute of Science, Israel

Université de Provence, France

Faculty of Physics, National and Kapodistrian University of Athens,

Greece

Astronomical Institute Ondrejov, Academy of Sciencies of the Czech

Republic, Czech Republic

Instituto de Astrofísica de Andalucía, Spain

Astronomical Observatory of Strasbourg, France

University of Belgrade, Faculty of Physics, Serbia

IHIS – techno experts d.o.o., Belgrade, Serbia

Physics Department, University of Split & Science and Society Synergy Institute, Croatia

Instituto de Astrofísica de Canarias, Spain

Astronomical Observatory Belgrade, Serbia

Seoul National University, Korea

National Astronomical Observatories, Chinese Academey of Science, China

Institute of Theoretical and Experimental Physics, Russia