@book { SocialNetworks,
    title = "Social Networks",
    author = "Susan B. {Barnes}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    doi = "10.3726/978-1-4539-1029-0",
    url = "https://www.peterlang.com/document/1109380"
}