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@article{MM2_1978__26_154591, author = {Moritz Armsen}, title = {Variational theory of {Riemannian} subspaces.}, journal = {Manuscripta mathematica}, pages = {315--330}, publisher = {mathdoc}, volume = {26}, year = {1978}, zbl = {0396.53012}, url = {http://geodesic.mathdoc.fr/item/MM2_1978__26_154591/} }
Moritz Armsen. Variational theory of Riemannian subspaces.. Manuscripta mathematica, Tome 26 (1978), pp. 315-330. http://geodesic.mathdoc.fr/item/MM2_1978__26_154591/