@article{CMH_1969__44_139389,
     author = {Heinz Br\"uhlmann},
     title = {Einige {Kongruenzs\"atze} f\"ur geschlossene k-dimensionale {Fl\"achen} in n-dimensionalen {Riemannschen} {R\"aumen.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {164--190},
     publisher = {mathdoc},
     volume = {44},
     year = {1969},
     zbl = {0179.50501},
     url = {http://geodesic.mathdoc.fr/item/CMH_1969__44_139389/}
}