@article{Schweitzer_2013,
    doi = {10.1016/j.dam.2012.12.023},
    url = {https://doi.org/10.1016%2Fj.dam.2012.12.023},
    year = {2013},
    month = {jul},
    publisher = {Elsevier {BV}},
    volume = {161},
    number = {10-11},
    pages = {1598--1609},
    author = {Pascal Schweitzer},
    title = {Iterated open neighborhood graphs and generalizations},
    journal = {Discrete Applied Mathematics}
}

@article{Schweitzer_2013, doi = {10.1016/j.dam.2012.12.023}, url = {https://doi.org/10.1016%2Fj.dam.2012.12.023}, year = {2013}, month = {jul}, publisher = {Elsevier {BV}}, volume = {161}, number = {10-11}, pages = {1598--1609}, author = {Pascal Schweitzer}, title = {Iterated open neighborhood graphs and generalizations}, journal = {Discrete Applied Mathematics} }