@book { ContemporaryRelationsbetweenPolandandUkraine,
    title = "Contemporary Relations between Poland and Ukraine",
    author = "Andrzej {Szeptycki}",
    year = "2019",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b15934",
    url = "https://www.peterlang.com/document/1058259"
}