Full Approximatibility of a Class of Problems over Power Sets.

Giorgio Ausiello Alberto Marchetti-Spaccamela Marco Protasi Full Approximatibility of a Class of Problems over Power Sets. 76-87 1981 conf/caap/1981 CAAP db/conf/caap/caap81.html#AusielloMP81 http://dx.doi.org/10.1007/3-540-10828-9_55