@incollection{HartoghKehrerWickel2014,
  author    = {Hartogh, Theo and Kehrer, Eva and Wickel, Hans Hermann},
  title     = {Music Geragogics - Making Music with the Elderly},
  series = {Damien Sagrillo \& Dieter Ferring (Hrsg.): Music (Education) from the Cradle to the Grave},
  booktitle = {Damien Sagrillo \& Dieter Ferring (Hrsg.): Music (Education) from the Cradle to the Grave},
  publisher = {Margraf Publishers},
  address   = {Weikersheim},
  isbn      = {978-3-8236-1687-0},
  pages     = {69 -- 84},
  year      = {2014},
  language  = {en}
}
@incollection{LinnemannBrummernhenrichJucks2014,
  author    = {Linnemann, Gesa and Brummernhenrich, B. and Jucks, Regina},
  title     = {A matter of politeness? On the role of face-threatening acts in online tutoring},
  series = {Face work and social media},
  booktitle = {Face work and social media},
  editor    = {Bedijs, K. and Held, G. and Maaß, C.},
  publisher = {LIT},
  address   = {M{\"u}nster},
  isbn      = {978-3-643-90435-5},
  publisher      = {FH M{\"u}nster - University of Applied Sciences},
  pages     = {423 -- 440},
  year      = {2014},
  language  = {en}
}