@article {2001, title = {Stationary states for a two-dimensional singular Schrodinger equation}, journal = {Boll. Unione Mat. Ital. Sez. B Artic. Ric. Mat. (8) 4 (2001), no. 3, 609-633.}, number = {SISSA;35/99/M}, year = {2001}, publisher = {SISSA Library}, url = {http://hdl.handle.net/1963/1249}, author = {Paolo Caldiroli and Roberta Musina} }