@incollection{Luckmann70,
  author	= {Luckmann, T},
  editor	= {Natanson, M.},
  title		= {On the boundaries of the Social World},
  year		= {1970},
  booktitle	= {Phenomenology and Social Reality: Essays in memory of Alfred Schutz},
  publisher	= {Nijhoff},
  address	= {The Hague},
  pages		= {73--100}
}