@article{10_37236_11538,
     author = {Linda Cook and Tom\'a\v{s} Masa\v{r}{\'\i}k and Marcin Pilipczuk and Amadeus Reinald and U\'everton S. Souza},
     title = {Proving a directed analogue of the {Gy\'arf\'as-Sumner} conjecture for orientations of {\(P_4\)}},
     journal = {The electronic journal of combinatorics},
     year = {2023},
     volume = {30},
     number = {3},
     doi = {10.37236/11538},
     zbl = {1533.05102},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/11538/}
}