Ho Chi Minh City, Hồ Chí Minh, Vietnam
Göttingen, Lower Saxony, Germany
Varna, Varna, Bulgaria
Jena, Thuringia, Germany
Göttingen, Niedersachsen, Germany
Münster, Germany
Johannesburg, Gauteng, South Africa
London, Greater London, United Kingdom of Great Britain and Northern Ireland
Essen, Germany
Goettingen, Lower Saxony, Germany
Varna, Bulgaria
