Krakow, Lower Silesian Voivodeship, Poland
Siegen, North Rhine-Westphalia, Germany
Tübingen, Baden-Württemberg, Germany
Bratislava, Bratislava Region, Slovakia
Taraz, Jambyl Region, Kazakhstan
Stuttgart, Baden-Württemberg, Germany
Khromtau, Aktobe Region, Kazakhstan
Bishkek, Chui, Kyrgyzstan
Düsseldorf, North Rhine-Westphalia, Germany
Skopje, Skopje Region, Macedonia, the Former Yugoslav Republic Of
Moscow, Moscow City, Russian Federation
