@article{MM2_1989__64_2_155396,
     author = {J.-H. Eschenburg},
     title = {Maximum principle for hypersurfaces.},
     journal = {Manuscripta mathematica},
     pages = {55--76},
     publisher = {mathdoc},
     volume = {64},
     number = {2},
     year = {1989},
     zbl = {0678.53048},
     url = {http://geodesic.mathdoc.fr/item/MM2_1989__64_2_155396/}
}