@article{MOMA_1994__118_3-4_178663,
     author = {Qing-Ming Cheng and Qian-Rong Wan},
     title = {Complete {Hypersurfaces} of {R4} with {Constant} {Mean} {Curvature.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {171--204},
     publisher = {mathdoc},
     volume = {118},
     number = {3-4},
     year = {1994},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1994__118_3-4_178663/}
}