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@article{JRAM_1987__381_152969, author = {Robert Gulliver and J\"urgen Jost}, title = {Harmonic maps which solve a free-boundary problem.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {61--89}, publisher = {mathdoc}, volume = {381}, year = {1987}, zbl = {0619.35117}, url = {http://geodesic.mathdoc.fr/item/JRAM_1987__381_152969/} }
Robert Gulliver; Jürgen Jost. Harmonic maps which solve a free-boundary problem.. Journal für die reine und angewandte Mathematik, Tome 381 (1987), pp. 61-89. http://geodesic.mathdoc.fr/item/JRAM_1987__381_152969/