M. Grillot, SINGULAR SOLUTIONS ON A SUBMANIFOLD OF NONLINEAR ELLIPTIC-EQUATIONS, Comptes rendus de l'Academie des sciences. Serie 1, Mathematique, 322(1), 1996, pp. 49-54
We prove existence and uniqueness of solutions of the equation -Delta
mu + \mu\(q-1) mu = 0, q > 1, which are singular on some submanifold,
this is done by studying the asymptotic behaviour of u near its singul
arities.