@inproceedings{congest-mdst21,
  author = {Lenzen, Christoph and Vahidi, Hossein},
  title = {Approximate Minimum Directed Spanning Trees Under Congestion},
  booktitle = {Structural Information and Communication Complexity: 28th International Colloquium, SIROCCO 2021, Wroc\l{}aw, Poland, June 28 – July 1, 2021, Proceedings},
  year = {2021},
  pages = {352--369},
  publisher = {Springer International Publishing},
  doi = {10.1007/978-3-030-79527-6_20},
  isbn = {978-3-030-79526-9},
  numpages = {18}
}