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Rotationally Symmetric Harmonic Maps from a Ball Into a Sphere and the Regularity Problem for Weak Solutions of Elliptic Systems
W. JägerH. Kaul
出版Universität Heidelberg. SFB 123, 1982
URLhttp://books.google.com.hk/books?id=O89xzwEACAAJ&hl=&source=gbs_api