@book { TrendsinContainerShipping,
    title = "Trends in Container Shipping",
    author = "Burkhard {Lemper} and Manfred {Zachcial}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-01284-2",
    url = "https://www.peterlang.com/document/1054279"
}