00300nam a2200097Ia 4500008004100000082002900041100001800070245005300088260003800141300002300179260206b        |||||||| |||| 00| 0 eng d  a519.70015157821bW177.TD  aWalk, Manfred  aTheory of quality in mathematical programmingb/  aNew York:bSpringer-Verlag,c1989  a178p. Index, Bibl.