@book { DieFinanzendesKantonsSolothurnnachdem2Weltkrieg,
    title = "Die Finanzen des Kantons Solothurn nach dem 2. Weltkrieg",
    author = "Peter Hermann {Spillmann}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1069176"
}