%0 Journal Article %A Colin de Verdière, Yves %A Hillairet, Luc %A Trélat, Emmanuel %T Small-time asymptotics of hypoelliptic heat kernels near the diagonal, nilpotentization and related results %J Annales Henri Lebesgue %D 2021 %P 897-971 %V 4 %I ÉNS Rennes %U http://archive.numdam.org/articles/10.5802/ahl.93/ %R 10.5802/ahl.93 %G en %F AHL_2021__4__897_0