%0 Journal Article %A Akopyan, Arseniy %T On the number of non-hexagons in a planar tiling %J Comptes Rendus. Mathématique %D 2018 %P 412-414 %V 356 %N 4 %I Elsevier %U http://www.numdam.org/articles/10.1016/j.crma.2018.03.005/ %R 10.1016/j.crma.2018.03.005 %G en %F CRMATH_2018__356_4_412_0