%0 Journal Article %A Lewis, Thomas M. %T On the Hamiltonian Number of a Plane Graph %J Discussiones Mathematicae. Graph Theory %D 2019 %P 171-181 %V 39 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGT_2019_39_1_a13/ %G en %F DMGT_2019_39_1_a13