@article{DMTCS_2010_12_1_a3,
     author = {Kowalik, Lukasz and Luzar, Borut and Skrekovski, Riste},
     title = {An improved bound on the largest induced forests for triangle-free planar graphs},
     journal = {Discrete mathematics & theoretical computer science},
     publisher = {mathdoc},
     volume = {12},
     number = {1},
     year = {2010},
     doi = {10.46298/dmtcs.487},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.46298/dmtcs.487/}
}