@article{AHL_2021__4__897_0,
     author = {Colin de Verdi\`ere, Yves and Hillairet, Luc and Tr\'elat, Emmanuel},
     title = {Small-time asymptotics of hypoelliptic heat kernels near the diagonal, nilpotentization and related results},
     journal = {Annales Henri Lebesgue},
     pages = {897--971},
     publisher = {\'ENS Rennes},
     volume = {4},
     year = {2021},
     doi = {10.5802/ahl.93},
     language = {en},
     url = {https://ahl.centre-mersenne.org/articles/10.5802/ahl.93/}
}