@article { MilitaryIntelligenceandLongTermPlanningintheNinthCentury,
    title = "Military Intelligence and Long-Term Planning in the Ninth Century",
    author = "Bernard S. {Bachrach} and David S. {Bachrach}",
    year = "2023",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    journal = "Mediaevistik",
    number = "1",
    volume = "33",
    doi = "10.3726/med.2020.01.04",
    url = "https://www.peterlang.com/document/1329399"
}