@article{IM_1987__90_143520,
     author = {N. Smale},
     title = {A bridge principle for minimal and constant mean curvature submanifolds of {RN.}},
     journal = {Inventiones mathematicae},
     pages = {505--550},
     publisher = {mathdoc},
     volume = {90},
     year = {1987},
     zbl = {0637.49020},
     url = {http://geodesic.mathdoc.fr/item/IM_1987__90_143520/}
}