Barbone, Luca; Bonch-Osmolovsky, Mikhail; Lücke, Matthias - 2013
(Azerbaijan), Aleksander Chubrik and Aliaksei Kazlou (Belarus), Lasha Labadze and Mirjan Tukhashvili (Georgia), Vasile Cantarji … and Georgeta Mincu (Moldova), Tom Coupé and Hanna Vakhitova (Ukraine). The authors would like to thank for their comments …