@article{GDZPPN002067986, title = {Harmonic map heat flow with free boundary.}, journal = {Commentarii mathematici Helvetici}, volume = {66}, year = {1991}, pages = {279-301}, zbl = {0727.53044}, url = {http://dml.mathdoc.fr/item/GDZPPN002067986} }
Li, Ma. Harmonic map heat flow with free boundary.. Commentarii mathematici Helvetici, Tome 66 (1991) pp. 279-301. http://gdmltest.u-ga.fr/item/GDZPPN002067986/