Author(s): Victor Kremenyuk
Author(s): Vladimir Batyuk
Author(s): Tatiana B. Anichkina / Viktor Esin
Author(s): Nana Gegelashvili
Author(s): Valentin Kuznetsov
Author(s): Nadezhda Shvedova
Author(s): Evgenia Issraelyan
Author(s): Liudmila Lebedeva
Author(s): Andrey Davydov
Author(s): N. Petrovskaya
Author(s): Irina Smirnova
Author(s): Ekaterina Zolotova
Author(s): Alla Popova
Author(s): Sergei Emelianov
