@article{CMH_1971__46_139492,
     author = {Heinz Hopf and Yoshie Katsurada},
     title = {Some {Congruence} {Theorems} for {Closed} {Hypersurfaces} in {Riemann} {Spaces} {(Part} {III:} {Method} baser on {Voss'} {Proof)}},
     journal = {Commentarii mathematici Helvetici},
     pages = {478},
     publisher = {mathdoc},
     volume = {46},
     year = {1971},
     zbl = {0227.53035},
     language = {un},
     url = {https://geodesic-test.mathdoc.fr/item/CMH_1971__46_139492/}
}