Organic light-emitting diodes with new dyes based on coumarin oleh Anna V. Osadchenko, Andrey A. Vashchenko, Ivan A. Zakharchuk, Daniil S. Daibagya, Sergey A. Ambrozevich, Nikita Yu. Volodin, Dmitry A. Cheptsov, Sergey M. Dolotov, Valery F. Traven, Anton I. Avramenko, Svetlana L. Semenova, Alexander S. Selyukov