@article{AIHPA_1970__13_3_195_0,
     author = {Van Daele, A.},
     title = {On a certain class of semi-simple subalgebras of a semi-simple {Lie} algebra},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {195--213},
     publisher = {Gauthier-Villars},
     volume = {13},
     number = {3},
     year = {1970},
     mrnumber = {271175},
     zbl = {0206.32201},
     language = {en},
     url = {http://archive.numdam.org/item/AIHPA_1970__13_3_195_0/}
}