%0 Journal Article %A Nakamura, Shunsuke %T Distribution of Contractible Edges and the Structure of Noncontractible Edges having Endvertices with Large Degree in a 4-Connected Graph %J Discussiones Mathematicae. Graph Theory %D 2021 %P 1051-1066 %V 41 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGT_2021_41_4_a11/ %G en %F DMGT_2021_41_4_a11