Quantitative models of import demand have revolved around numerical estimates of demand elasticities for a number of theoretical and practical reasons. Especially in Latin America, much of stimulus and direction of post war development is said to have originated out of reaction to the trade constraint.
This paper was published in The Review of Economics and Statistics, Vol. 61, No. 1 (Feb., 1979), pp. 58-66
Weisskoff, Richard, "Trade, Protection And Import Elasticities For Brazil" (1977). Economic Staff Paper Series. 120.