Yevgen Chernolyev(important), Yevgen Chernolyev(interesting), Kirill Konopitsyn(important), Kirill Konopitsyn(interesting), Andrey Mis\'kov(interesting), Dmytro Petrychenko(interesting), Sergo Travelian(interesting), Oleg Sheremet(important), Oleg Sheremet(interesting), Vlad Gedziuk(important), Vlad Gedziuk(interesting), Kostiantyn Pylypiuk(important), Nataliya Kolisnichenko(interesting), Nataliya Kolisnichenko(important), Vsevolod Olenich(important), Vsevolod Olenich(interesting), Natalia Honcharyk(important), Natalia Honcharyk(interesting), Yakov Stepanov(interesting), Yakov Stepanov(important), Valentyn Pylypyshyn(important), Irina Ortik(interesting)