%0 Journal Article %A Qi Yan %A Xian'an Jin %T Extremal embedded graphs %J Ars Mathematica Contemporanea %D 2019 %P 637-652 %V 17 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.26493/1855-3974.1474.d54/ %R 10.26493/1855-3974.1474.d54 %G en %F 10_26493_1855_3974_1474_d54