@article{AIF_2014__64_4_1581_0,
     author = {Michel, Jean-Philippe},
     title = {Higher symmetries of the {Laplacian} via~quantization},
     journal = {Annales de l'Institut Fourier},
     pages = {1581--1609},
     publisher = {Association des Annales de l{\textquoteright}institut Fourier},
     volume = {64},
     number = {4},
     year = {2014},
     doi = {10.5802/aif.2891},
     mrnumber = {3329674},
     zbl = {06387318},
     language = {en},
     url = {https://aif.centre-mersenne.org/articles/10.5802/aif.2891/}
}