@incollection{Steffen_2011,
    doi = {10.1007/978-3-642-21455-4_8},
    url = {https://doi.org/10.1007%2F978-3-642-21455-4_8},
    year = {2011},
    publisher = {Springer Berlin Heidelberg},
    pages = {256--296},
    author = {Bernhard Steffen and Falk Howar and Maik Merten},
    title = {Introduction to Active Automata Learning from a Practical Perspective},
    booktitle = {Formal Methods for Eternal Networked Software Systems}
}

@incollection{Steffen_2011, doi = {10.1007/978-3-642-21455-4_8}, url = {https://doi.org/10.1007%2F978-3-642-21455-4_8}, year = {2011}, publisher = {Springer Berlin Heidelberg}, pages = {256--296}, author = {Bernhard Steffen and Falk Howar and Maik Merten}, title = {Introduction to Active Automata Learning from a Practical Perspective}, booktitle = {Formal Methods for Eternal Networked Software Systems} }