@article{MZ_1986__193_173781,
     author = {U. Pinkall},
     title = {Inequalities of {Willmore} {Type} for {Submanifolds.}},
     journal = {Mathematische Zeitschrift},
     pages = {241--246},
     publisher = {mathdoc},
     volume = {193},
     year = {1986},
     zbl = {0602.53039},
     url = {http://geodesic.mathdoc.fr/item/MZ_1986__193_173781/}
}