Virtually no one in the Chess world believes Black wins, hence no literature on what you highlight.
Of course, that isn't mathematical proof, but if we were to ever get an answer and I had to gamble on it, I'd say it's a draw with optimal play.
Now if we look at stats, certainly Black loses more often than white loses, with draws becoming more common at higher levels of play.
I'd even say if White got 2 moves to start, and the moves were one for one thereafter, the game is a draw with optimal play. Granted, Black would be cramped by White's first two moves.