@inproceedings{DBLP:conf/fase/LaraG20,
  author       = {Juan de Lara and Esther Guerra},
  editor       = {Heike Wehrheim and
                  Jordi Cabot},
  title        = {Multi-level Model Product Lines - Open and Closed Variability for
                  Modelling Language Families},
  booktitle    = {Fundamental Approaches to Software Engineering - 23rd International
                  Conference, {FASE} 2020, Held as Part of the European Joint Conferences
                  on Theory and Practice of Software, {ETAPS} 2020, Dublin, Ireland,
                  April 25-30, 2020, Proceedings},
  series       = {Lecture Notes in Computer Science},
  volume       = {12076},
  pages        = {161--181},
  publisher    = {Springer},
  year         = {2020},
  url          = {https://doi.org/10.1007/978-3-030-45234-6\_8},
  doi          = {10.1007/978-3-030-45234-6\_8},
}