@article{MAN_1973__204_162474,
     author = {Su-shing Chen},
     title = {On {Subgroups} of the {Noncompact} {Real} {Exceptional} {Lie} {Group} {F4.}},
     journal = {Mathematische Annalen},
     pages = {271--284},
     publisher = {mathdoc},
     volume = {204},
     year = {1973},
     zbl = {0257.22010},
     url = {http://geodesic.mathdoc.fr/item/MAN_1973__204_162474/}
}