I can't find out much on Gorilla AI, information on the subject seems to be quite sparse.
Going back to the start I wonder if there are any photographs taken at Bristol at the time of the breeding loan? I don't know exact dates so there may be some in the gallery already.
I think you don't read much about Gorilla AI because it is so rarely successful. If it was it would be a big step forward in enabling the many 'difficult' gorillas of both sexes to better contribute to the captive gene pool.
I have photos of Eva and Asante at Bristol but they are old (film) prints. I might be able to upload a few sometime. (I haven't seen any in the Gallery).