@article{TSG_2019-2021__36__51_0,
     author = {Cyril Letrouit},
     title = {Exact observability properties of subelliptic wave and {Schr\"odinger} equations},
     journal = {S\'eminaire de th\'eorie spectrale et g\'eom\'etrie},
     pages = {51--102},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {36},
     year = {2019-2021},
     doi = {10.5802/tsg.373},
     language = {en},
     url = {https://proceedings.centre-mersenne.org/articles/10.5802/tsg.373/}
}