@techreport{techPSI11,
  author =   {Caballero, Rafael and Garc\'{\i}a-Ruiz, Yolanda and S\'aenz-P\'erez, Fernando},
  title =    {{Declarative Debugging of SQL Views}},
  institution =  {Facultad de {I}nform\'atica, {U}niversidad {C}omplutense de {M}adrid},
  year =     2011,
  number =   {SIC-03/11},
  note =    {{http://federwin.sip.ucm.es/sic/investigacion/publicaciones/pdfs/SIC-3-11.pdf}}
}