@article{GanianKS22,
 author = {Robert Ganian and
Jan Kratochv{\'{i}}l and
Stefan Szeider},
 journal = {Discr. Appl. Math.},
 pages = {1--2},
 title = {Preface: Ninth workshop on graph classes, optimization, and Width
Parameters, {Vienna}, {Austria}},
 url = {https://doi.org/10.1016/j.dam.2022.02.009},
 volume = {312},
 year = {2022}
}