@incollection{KiyGruenwaldWeiseetal.2016,
  author    = {Alexander Kiy and Franka Gr{\"u}nwald and Matthias Weise and Ulrike Lucke},
  title     = {Facilitating portfolio-driven learning in a personal learning environment},
  booktitle = {3rd Workshop on Technology-Enhanced Formative Assessment, TEFA 2016; CEUR Workshop Proceedings},
  volume    = {1850},
  url       = {http://www.scopus.com/inward/record.url?eid=2-s2.0-85021883746\&partnerID=MN8TOARS},
  year      = {2016},
}