@inproceedings{Sommermann2018,
  author    = {Karl-Peter Sommermann},
  title     = {Soziale Rechte in Stufen: {\"U}berwindung einer alten Debatte},
  series = {Rechtsstaatlichkeit, Freiheit und soziale Rechte in der Europ{\"a}ischen Union},
  editor    = {Christian Calliess and Wolfgang Kahl and Kirsten Schmalenbach},
  publisher = {Duncker \& Humblot},
  address   = {Berlin},
  isbn      = {978-3-428-14354-2},
  pages     = {253 -- 267},
  year      = {2018},
  abstract  = {.},
  language  = {de}
}