@book { CeterisParibusinConservativeBeliefRevision,
    title = "«Ceteris Paribus» in Conservative Belief Revision",
    author = "Frank {Zenker}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1106412"
}