@article{DMGT_2019_39_1_a10,
     author = {Yang, Chao and Ren, Han},
     title = {New {Formulae} for the {Decycling} {Number} of {Graphs}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {125--141},
     publisher = {mathdoc},
     volume = {39},
     number = {1},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2019_39_1_a10/}
}