http://www.achtungpanzer.com/gen5.htm
That is a link to the widely regarded account of the action by Barkmann, it has no references tho' so no idea where the account comes from. I have read a similar but more detailed account in a book many years ago but cannot remember the name. The two accounts could of course be based off each other.
It is always hard to know what to believe, I am sure there is a certain amount of "sexing up" of the Panzer Aces, I mean Herr Goebbles was a master at such things.