@article{DMTCS_2020_22_4_a6,
     author = {Kolman, Petr and Kouteck\'y, Martin and Tiwary, Hans Raj},
     title = {Extension {Complexity,} {MSO} {Logic,} and {Treewidth}},
     journal = {Discrete mathematics & theoretical computer science},
     publisher = {mathdoc},
     volume = {22},
     number = {4},
     year = {2020-2021},
     doi = {10.23638/DMTCS-22-4-8},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.23638/DMTCS-22-4-8/}
}