Historical sales and demand are not equivalent when referred to periodicals, since the former are limited by the available stock. When the mean stockout is low and there is not possibility of updating data during the selling period, demand is estimated by means of a maximum-likelihood procedure....

"Papers focus on problems associated with the implementation of neoliberal economic policies in Mexico under the Salinas Administration. Concern is with labor conditions, and the ability of firms to face foreign competition"--Handbook of Latin American Studies, v. 57