\input zb-basic
\input zb-ioport
\iteman{io-port 70913315}
\itemau{Broersma, Hajo; Golovach, Petr A.; Paulusma, Dani\"el; Song, Jian}
\itemti{On coloring graphs without induced forests}
\itemso{ISAAC (2), 156-167 (2010).}
\itemcc{}
\itemut{}
\itemli{doi:10.1007/978-3-642-17514-5\_14}
\end