@phdthesis{books-daglib-0031223,
  title = {A unified framework for multi-level modeling},
  author = {Bastian Kennel},
  year = {2012},
  researchr = {https://researchr.org/publication/books-daglib-0031223},
  cites = {0},
  citedby = {0},
  school = {Universität Mannheim},
}