Philip Ushchev is currently Professor of Economics at ECARES, ULB. He has broad research interests, which embrace networks, applied general equilibrium (specifically, the implications of variable elasticity of substitution in macro and trade), industrial organization, and urban/spatial economics. His ongoing research covers a rich array of topics, including technology adoption, peer effects in networks, the role of word-of-mouth in entry deterrence, innovation cycles, and the origin of cities.  Philip has a number of publications in top-field journals including Journal of Economic Theory, Games and Economic Behaviour, Journal of Urban Economics. One of his recent papers has been conditionally accepted for publication in Econometrica, and another one is RR in the Journal of Political Economy.