%0 Journal Article %A Mirko Petruševski %A Riste Škrekovski %T A note on acyclic number of planar graphs %J Ars Mathematica Contemporanea %D 2017 %P 317-322 %V 13 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.26493/1855-3974.1118.143/ %R 10.26493/1855-3974.1118.143 %G en %F 10_26493_1855_3974_1118_143