The author of the Cyberpunk Manifesto (1997), Christian As. Kirtchev, is also Bulgarian. He has a collection of Eastern European cyberpunk stories on Amazon (no idea how good they are) and is apparently active on Twitter too.

- http://project.cyberpunk.ru/idb/cyberpunk_manifesto.html

- https://www.amazon.com/Chemical-Illusions-Anthology-Cyberpun...

- https://twitter.com/cyberkristiyan