Xw. Peng et Gf. Wang, HARMONIC MAPS WITH A PRESCRIBED POTENTIAL, Comptes rendus de l'Academie des sciences. Serie 1, Mathematique, 327(3), 1998, pp. 271-276
In this Note, we consider the problem of harmonic maps of degree 1 wit
h a prescribed potential, from S-2 subset of R-3 to itself. If the pot
ential G : S-2 --> R is Symmetric with respect to a plane containing t
he origin of R-3 and the restriction of G to the circle on the plane i
s constant, then the aforementioned problem is salvable. (C) Academie
des Sciences/Elsevier, Paris