@book { TheCounterfactualYardstick,
    title = "The Counterfactual Yardstick",
    author = "Karolina {Cern}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-04738-7",
    url = "https://www.peterlang.com/document/1048744"
}