There existed also underground literary circles like the Kyiv school of poetry (Vasyl Holoborodko, Mykola Vorobyov, Viktor Kordun, Mykhaylo Hryhoriv), a circle of Lviv writers around the samizdat "Skrynya" almanac (Hryhoriy Chubay, Oleh Lysheha, Mykola Riabchuk, Viktor Morozov, Roman Kis, Orest Yavorskyi), separate dissident writers like Ihor Kalynets. Authors belonging to Kyiv ironic school (Volodymr Dibrova, Bohdan Zholdak, Les Podervianskyi) are considered to be the forefathers of Ukrainian postmodernism. Contemporary Ukrainian literature was also influenced by the New York group of Ukraininan emigre writers, who separated politics from their art in contrast to the politically active sixtiers writers in soviet Ukraine.