@book { ReligiousTolerationintheMiddleAgesandEarlyModernAge,
    title = "Religious Toleration in the Middle Ages and Early Modern Age",
    author = "Albrecht {Classen}",
    year = "2019",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b16423",
    url = "https://www.peterlang.com/document/1111115"
}