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@article{MM2_1991__70_1_155596, author = {Michael Struwe}, title = {The evolution of harmonic mappings with free boundaries.}, journal = {Manuscripta mathematica}, pages = {373--384}, publisher = {mathdoc}, volume = {70}, number = {1}, year = {1991}, zbl = {0724.58022}, url = {http://geodesic.mathdoc.fr/item/MM2_1991__70_1_155596/} }
Michael Struwe. The evolution of harmonic mappings with free boundaries.. Manuscripta mathematica, Tome 70 (1991) no. 1, pp. 373-384. http://geodesic.mathdoc.fr/item/MM2_1991__70_1_155596/