@book { TheComprehensiveSchoolExperimentRevisitedEvidencefromWesternEurope,
    title = "The Comprehensive School Experiment Revisited: Evidence from Western Europe",
    author = "Achim {Leschinsky} and Karl Ulrich {Mayer}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1089004"
}