Brocker, J.

restriction parameter price utility function utility parameter restrictions function demand c / pi expenditure commodity model somermeyer murty proof p -21 erasmus university rotterdam -21 quasi-convex addilog system addilog consumer section demand equations parameters i value price elasticities system addilog demand equations commodity i inelastic demand review literature elasticitie equation vector university equality preference curve department engel curves budget equality sign data scarcity expenditure system consumer behavior deaton muellbauer houthakker economic cge modeling econometrica chung price elasticity cross-country comparison langhout rotterdam budget constraint i i i analysis gamaletso description european consumer expenditure patterns-comment johannes brr b 1 p 11 p 12 substitution i parameter restrictions generality computable netherland j e j 3 3. proof erasmu copenhagen business school consumer expenditure patterns-reply p 1 p jan van daal varian