@book{OPUS4-3936,
  title     = {Absenteeism, Strategies, Concepts and Materials to Fight Truancy: Europareport in englischer Sprache, Band 1-3 / Nieders{\"a}chsisches Institut f{\"u}r Lehrerbildung und Schulentwicklung (Hrsg.)},
  volume    = {1-3},
  editor    = {Linssen, R.},
  publisher = {Eigenverlag},
  address   = {Hildesheim},
  year      = {2005},
  language  = {en}
}
@book{OPUS4-11427,
  title     = {Inequality and Uncertainty - Current Challenges for Cities},
  editor    = {Kurtenbach, Sebastian and Smagacz-Poziemska, Marta and Gómez, Maria Victoria and Pereira, Patrícia and Guarino, Laura and Villalon, Juan Jose},
  publisher = {Palgrave},
  address   = {London},
  isbn      = {978-981-32-9162-1},
  doi       = {10.1007/978-981-32-9162-1},
  publisher      = {FH M{\"u}nster - University of Applied Sciences},
  year      = {2019},
  language  = {en}
}
@misc{OPUS4-14524,
  title     = {Policy guidelines of situational prevention measures in internet related disorders: Results of a German expert group commissioned by the Federal Ministry of Health. 4th International Conference on Behavioral Addictions, Haifa, Israel: 20.02.2017},
  year      = {2017},
  language  = {en}
}