I saw that someone found my blog after searching for Робърт Иванов. Since I write my name in Bulgarian in slightly different way, I will describe here the reasons.
My name is Robert Ivanov. Robert is transcribed in Bulgarian Cyrillic as Робърт (which is closer to English pronouncing), while in Serbian it is written as Роберт (which is equal to English letters, just written in Cyrillic equivalents). Since I was born in Serbia, I am used to be called as the latter. I don’t mind either, I just mention here what is the preferred way (documents also have same preferences as me). Actually, you can just call me Robbie (Роби) 🙂