@article{IM_1972__17_142175,
     author = {Ted Petrie},
     title = {Exotic {S1} {Actions} on {CP3} and {Related} {Topics.}},
     journal = {Inventiones mathematicae},
     pages = {317--328},
     publisher = {mathdoc},
     volume = {17},
     year = {1972},
     zbl = {0243.57020},
     url = {http://geodesic.mathdoc.fr/item/IM_1972__17_142175/}
}