@inproceedings{Grandoni_STOC2019,
TITLE = {{$O(\log^2k/\log\log{k})$}-Approximation Algorithm for Directed {S}teiner Tree: A Tight Quasi-Polynomial-Time Algorithm},
AUTHOR = {Grandoni, Fabrizio and Laekhanukit, Bundit and Li, Shi},
LANGUAGE = {eng},
ISBN = {978-1-4503-6705-9},
DOI = {10.1145/3313276.3316349},
PUBLISHER = {ACM},
YEAR = {2019},
DATE = {2019},
BOOKTITLE = {STOC '19, 51st Annual ACM Symposium on the Theory of Computing},
PAGES = {253--264},
ADDRESS = {Phoenix, AZ, USA},
}