@article{MAN_1988__282_2_164485,
     author = {Y. Sun Sun Poon},
     title = {Algebraic {Dimension} of {Twistor} {Spaces.}},
     journal = {Mathematische Annalen},
     pages = {621--628},
     year = {1988},
     volume = {282},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/MAN_1988__282_2_164485/}
}