Roman Yaremchuk(nice), Oleg Sheremet(nice), Andrey Mis\'kov(nice), Sergo Travelian(nice), Inna Kyselova(nice), Yevgen Chernolyev(nice), Olga Malygina(nice), Nikola Zmievskiy(nice), Oleksandr Kovalchuk(nice), Petro Kondrat(nice), Petro Kondrat(interesting), Yakov Stepanov(nice), Yakov Stepanov(important), Yakov Stepanov(interesting), Natalia Honcharyk(nice), Natalia Honcharyk(important), Natalia Honcharyk(interesting), Vasil Bodnar(nice), Serhiy Bondarenko(nice)