Wu, Bo; Shen, Zifei; Yang, Minbo Multiple solutions for singular elliptic problems involving Hardy-Sobolev critical exponent. (English) Zbl 1152.35378 Acta Anal. Funct. Appl. 8, No. 2, 118-125 (2006). MSC: 35J60 Nonlinear elliptic equations 35B33 Critical exponents in context of PDEs 35J25 Boundary value problems for second-order elliptic equations 47J30 Variational methods involving nonlinear operators PDFBibTeX XMLCite \textit{B. Wu} et al., Acta Anal. Funct. Appl. 8, No. 2, 118--125 (2006; Zbl 1152.35378)