@incollection{Gruler_2008,
    doi = {10.1007/978-3-540-68863-1_8},
    url = {https://doi.org/10.1007%2F978-3-540-68863-1_8},
    year = {2008},
    publisher = {Springer Berlin Heidelberg},
    pages = {113--131},
    author = {Alexander Gruler and Martin Leucker and Kathrin Scheidemann},
    title = {Modeling and Model Checking Software Product Lines},
    booktitle = {Lecture Notes in Computer Science}
}

@incollection{Gruler_2008, doi = {10.1007/978-3-540-68863-1_8}, url = {https://doi.org/10.1007%2F978-3-540-68863-1_8}, year = {2008}, publisher = {Springer Berlin Heidelberg}, pages = {113--131}, author = {Alexander Gruler and Martin Leucker and Kathrin Scheidemann}, title = {Modeling and Model Checking Software Product Lines}, booktitle = {Lecture Notes in Computer Science} }