@article{CMH_1974__49_139595,
     author = {Wu-Yi Hsiang},
     title = {Structural {Theorems} for {Topological} {Actions} of {Z...-Tori} on {Real,} {Complex} and {Quarternionic} {Projective} {Spaces}},
     journal = {Commentarii mathematici Helvetici},
     pages = {479--491},
     publisher = {mathdoc},
     volume = {49},
     year = {1974},
     zbl = {0294.57026},
     url = {http://geodesic.mathdoc.fr/item/CMH_1974__49_139595/}
}