%0 Journal Article %A Yongxin Lan %A Yongtang Shi %A Zi-Xia Song %T Extremal \(H\)-free planar graphs %J The electronic journal of combinatorics %D 2019 %V 26 %N 2 %U http://geodesic.mathdoc.fr/articles/10.37236/8255/ %R 10.37236/8255 %F 10_37236_8255