[written and researched by Marc Di Luca, Leonid Ragozin [written and researched by Marc Di Luca, Leonid Ragozin]. written and researched by Mara Vorhees, Leonid Ragozin this edition written and researched by Marc Di Duca, Leonid Ragozin this edition written and researched by Marc Di Duca, Leonid Ragozin. written and reseached by Marc Di Duca, Kerry Christiani. this edition written and researched by Marc Di Duca, Greg Bloom, Leonid Ragozin this edition written and researched by Mara Vorhees, Leonid Ragozin. this edition written and researched by Marc Di Duca, Greg Bloom, Leonid Ragozin. written and researched by Sara Benson