@article{MZ_1985__190_173620,
     author = {An-Min Li},
     title = {An {Extrinsic} {Rigity} {Theorem} for {Minimal} {Surfaces} in {S3.}},
     journal = {Mathematische Zeitschrift},
     pages = {221--224},
     publisher = {mathdoc},
     volume = {190},
     year = {1985},
     url = {http://geodesic.mathdoc.fr/item/MZ_1985__190_173620/}
}