%0 Journal Article %A Elisabeth Remm %A Vladimir Dotsenko %A Martin Markl %T Non-Koszulness of Operads and Positivity of Poincaré Series %J Documenta mathematica %D 2020 %P 309-328 %V 25 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/748/ %R 10.4171/dm/748 %F 10_4171_dm_748