"Serednie Castle". Public-Informational Portal of the city of Uzhhorod (in Ukrainian). Archived from the original on 21 October 2009. Retrieved 6 June 2012.
"Serednie Castle". Public-Informational Portal of the city of Uzhhorod (in Ukrainian). Archived from the original on 21 October 2009. Retrieved 6 June 2012.