Unrestricted Gomoku on a small board

Question

In the m,n,k game page from Wikipedia, it says that a (6, 6, 5) is proved to be a draw, and (15, 15, 5) is proved to be a win ( I briefly read the paper and it is a rather complicated computer method which has no implementation available online). But there is no information or result for (n, n, 5) where n is between 6 and 15 on that page, I also searched the internet but did not find more relevant results. From my own playing experiences and computer simulation results, games like (7, 7, 5) and (8, 8, 5) are very likely to be a draw. Is there any paper/results for these games? When is the split point of n such that Black is possible to win? Any reference would be appreciated.