Stw 573 species identification

[Petya]

I just read that there is a new article by Ron Clarke in the South African Journal of Science about Stw 573 in which he claims it is neither A. africanus nor A. afarensis. I surely would like a copy of the article if anyone can post it.
Clarke, Ronald J (2008). Latest information on Sterkfontein's Australopithecus skeleton and a new look at Australopithecus. South African Journal of Science 104 (11/12), pp. 443-449 (November-December)
Update: I read the articleand Clarke does not name the new second species but includes Stw 384, 183, 252, 498, 505 as well as Sts71, Sts 1 and MLD2 along with Stw 573 in it.