@book { SolipsismusbeiLudwigWittgenstein,
    title = "Solipsismus bei Ludwig Wittgenstein",
    subtitle = "Eine Studie zum Früh- und Spätwerk",
    author = "Sebastian {Lalla}",
    year = "2002",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1093865"
}