Sorbs and their genes

I thought they surely have polish and east european blood connection. Check it:
http://www.nature.com/ejhg/journal/vaop/ncurrent/full/ejhg201165a.html

Truth

Lets check it:
http://www.archaeologyonline.net/artifacts/19th-century-paradigms.html

Lets check it:
http://www.archaeologyonline.net/artifacts/19th-century-paradigms.html