@article{JOLT_2019_29_3_a5,
     author = {Fanny Kassel and Toshiyuki Kobayashi},
     title = {Invariant {Differential} {Operators} on {Spherical} {Homogeneous} {Spaces} with {Overgroups}},
     journal = {Journal of Lie Theory},
     pages = {663--754},
     year = {2019},
     volume = {29},
     number = {3},
     url = {http://geodesic.mathdoc.fr/item/JOLT_2019_29_3_a5/}
}