 In her publication, "Die verlorenen Söhne" (The Lost Sons, 2006), her central theme is the influence of Islam on the small family.The book is based on Kelek's research project on the subject of "parallel society" at the "Evangelischen Fachhochschule für Sozialpädagogik" in Hamburg.Here also, Kelek merges autobiographical details, observations, conversations with Turkish retirees, and the results of interviews with Turkish prison convicts.