@book { ExtrembergsteigenVersucheinerpsychologischorientiertenBestimmung, title = "Extrembergsteigen: Versuch einer psychologisch orientierten Bestimmung", author = "Clemens {Binkele}", year = "2015", publisher = "BACHELOR + MASTER PUBLISHING", address = "Hamburg, Deutschland", url = "https://m.bachelor-master-publishing.de/document/297584" }