Am not aware of any documentation available on this subject. Surely you have drained the oil and reset it to the proper level.

It can cause hard starting, slight engine smoke and poor performance. I don't think it will cause any permanent damage if you have reset the level within the normal oil change intervals. I would suggest running a high octane fuel ( the highest available at the pump) for at least 2 tank full's and this should help reseat the rings after setting the oil level to the proper specification.