Kostiantyn Pylypiuk(interesting), Yakov Stepanov(important), Yakov Stepanov(interesting), Serhii Petrovych(interesting), Olexandr Ghryb(important), Yuriy Kodrul(important), Inna Kyselova(interesting), Elena Pavlenko(interesting), Oleg Martsun(interesting), Oleg Martsun(important)