Deletion of Obol (programming language)

Comment: I also found http://bib.irb.hr/datoteka/407651.Diplomski_Anamarija_Friganovi.pdf this thesis which appears to be entirely about Obol given the English abstract. However, it seems to be a master's thesis rather than a PhD thesis, and so not counted as , although I'd be happy to be corrected about that if anyone knows better. I found quite a few papers written by the Obol authors, but nothing else. I would be willing to change to keep if anyone can find another good source, however
Stance: delete
Cited policy: Wikipedia:Reliable sources (WP:RS)