This article reviews the empirical evidence on firm heterogeneity in international trade. A first
wave of empirical findings from microdata on plants and firms proposed challenges for …

In principle, firms in developing countries benefit from the fact that advanced technologies
and products have already been developed in industrialized countries and can simply be …

We develop and structurally estimate a model of heterogeneous multiproduct firms that can
be used to decompose the firm-size distribution into the contributions of …

We explore firm size heterogeneity in production networks. In comprehensive data for
Belgium, firms with more customers have higher total sales but lower sales and lower market …

This article establishes six stylized facts about firms' export prices using detailed customs
data on the universe of Chinese trade flows. First, across firms selling a given product …

We examine the global operations of multi-product firms. We present a flexible
heterogeneous-firm trade model with either limited or strong scope for quality differentiation …

To quantify trade frictions, we examine multiproduct exporters. We build a flexible general-
equilibrium model and estimate market entry costs using Brazilian firm-product-destination …

This paper examines the relationship between the destination of exports and the input prices
paid by firms, using detailed customs and firm-product-level data from Portugal. Both …

We develop an aggregative games approach to study oligopolistic price competition with
multiproduct firms. We introduce a new class of IIA demand systems, derived from …

We develop a new model of multi-product firms which invest to improve the perceived quality
of both their individual products and their brand. Because of flexible manufacturing, products …