%0 Journal Article %A Bramburger, Jason J. %T Ultracontractive Properties for Directed Graph Semigroups with Applications to Coupled Oscillators %J Canadian mathematical bulletin %D 2020 %P 13-30 %V 63 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/S0008439519000390/ %R 10.4153/S0008439519000390 %F 10_4153_S0008439519000390