@article{CRMATH_2015__353_6_517_0,
     author = {Chamorro, Diego and Jarr{\'\i}n, Oscar},
     title = {Fractional {Laplacians,} extension problems and {Lie} groups},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {517--522},
     publisher = {Elsevier},
     volume = {353},
     number = {6},
     year = {2015},
     doi = {10.1016/j.crma.2015.04.007},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1016/j.crma.2015.04.007/}
}