1. ECARES; Université Libre de Bruxelles (Belgium) and CEPR
2. Novosibirsk State University; Sobolev Institute for Mathematics and NRU-Higher School of Economics (Russia)
3. CORE-UCLouvain (Belgium); NRU-Higher School of Economics (Russia) and CEPR
4. Novosibirsk State University and NRU-Higher School of Economics (Russia)