@article{GDZPPN002231778, title = {The evolution of harmonic mappings with free boundaries.}, journal = {Manuscripta mathematica}, volume = {70}, year = {1991}, pages = {373-384}, zbl = {0724.58022}, url = {http://dml.mathdoc.fr/item/GDZPPN002231778} }
Struwe, Michael. The evolution of harmonic mappings with free boundaries.. Manuscripta mathematica, Tome 70 (1991) pp. 373-384. http://gdmltest.u-ga.fr/item/GDZPPN002231778/