ALENA FOMINA(nice), Nikola Zmievskiy(nice), Yevgen Chernolyev(nice), Oleg Sheremet(nice), Andrey Mis\'kov(nice), Nataliya Kolisnichenko(nice), Andrew Simon(nice), Andrew Simon(interesting), Andrew Simon(important), Sergo Travelian(nice), Alexender Zabolotnyy(interesting), Vsevolod Olenich(nice), Kostiantyn Pylypiuk(nice), Kostiantyn Pylypiuk(important), Kostiantyn Pylypiuk(interesting), Vladimir Popenko(nice), Kirill Konopitsyn(nice), Natalia Honcharyk(nice), Natalia Honcharyk(interesting), Family Kuzhel(nice), Irina Ortik(nice), A. Zhuravel(nice), Vasil Bodnar(nice), Yakov Stepanov(nice), Yakov Stepanov(important), Yakov Stepanov(interesting), Ihor Vietokhin(nice)