C. Nirmalendu, M. Ramaswamy: Existence of positive solutions for some semilinear elliptic equations with singular coefficients Proc. Roy. Soc. EEdinburgh Sect. A 131 (2001), 1275--1295 p. 23, 2001 A. Adimurthi, C. Nirmalendu, M. Ramaswamy: An Improved Hardy-Sobolev Inequality and Its Application Proc. Amer. Math. Soc. 130 (2002), 489--505 p. 17, 2002 G. Canevari, A. Majumdar, M. Ramaswamy: Radial Symmetry on 3D Shells in the Landau-de Gennes Theory (preprint) 2014