| CH |
Zurich |
Swiss Federal Institute of Technology, ETH Zurich |
Eidgenössische Technische Hochschule Zürich |
| PL |
Warsaw |
SWPS University of Social Sciences and Humanities |
SWPS Uniwersytet Humanistycznospołeczny |
| AT |
Wien |
Synthesis Research |
Synthesis Forschung GesmbH |
| US |
Syracuse |
Syracuse University |
Syracuse University |
| HU |
Budapest |
Syreon Research Institute Ltd. |
Syreon Research Institute Ltd. |
| HU |
Gödöllö |
Szent Istvan University, Faculty of Economics and Social Sciences |
Szent István Egyetem, Gazdaság- és Társadalomtudományi Kar |
| EE |
Tallinn |
Tallinn University |
Tallinna Ülikool |
| EE |
Tallinn |
Tallinn University of Technology |
Tallinna Tehnikaülikool |
| HU |
Budapest |
TÁRKI Social Research Institute Inc. |
TÁRKI Társadalomkutatási Intézet Zrt. |
| US |
Washington |
Tax Foundation |
Tax Foundation |