Zelenko is a pious Jew who formerly was an irreligious young man. He wrote the book ''Metamorphosis'' about his transformation.<ref>[https://www.amazon.com/Metamorphosis-Dr-Vladimir-Zelenko-M-D/dp/1725968258 Metamorphosis by Vladimir Zelenko]</ref> | Zelenko is a pious Jew who formerly was an irreligious young man. He wrote the book ''Metamorphosis'' about his transformation.<ref>[https://www.amazon.com/Metamorphosis-Dr-Vladimir-Zelenko-M-D/dp/1725968258 Metamorphosis by Vladimir Zelenko]</ref> |