TY - JOUR A1 - Smith, V K A1 - Banzhaf, H S T1 - Quality adjusted price indexes and the Willig condition. Y1 - 2007/01/ N1 - R828103 aka R826609 N1 - R829508 JF - ECONOMICS LETTERS J1 - ECON LETT VL - 94 IS - 1 SP - 43 EP - 48 ER -