I've found actually a link to this article. Unfortunately during the first reading I skipped all the stuff concerning which manual was translated, erroneously attributing authorship and period (well by a few lousy decades).
Here is the link:
http://www.ospreypublishing.com/content2.php/cid=274
It's a very good point concerning khanjars. I'm also interested in the menaing of the distinction he makes in his translation in between of khanjar and dagger...