@book { Onunitgroupsofmodulargroupalgebras,
    title = "On unit groups of modular group algebras",
    subtitle = "The concept of end-commutable ordering - with 241 exercises",
    author = "Sven Bodo {Wirsing}",
    year = "2019",
    publisher = "Anchor Academic Publishing",
    address = "Hamburg, Germany",
    url = "https://m.anchor-publishing.com/document/511467"
}