Thanks for your feedback on the Balkans. It's important not to focus on just one study but make averages of all the data available.
Albania
North – 41.21%
South – 28.10%
http://www.springerlink.com/content/dtl1021500429242/fulltext.html
Bulgaria
Probable frequency is between 20 – 25%.
Maximum in Central and Northwestern, Minimum in Northeastern
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1181964/
http://www.familytreedna.com/public/bulgariandna/default.aspx?section=yresults
Serbia - around 20%
http://onlinelibrary.wiley.com/doi/10.1002/ajpa.21235/suppinfo
Maximum in Southeastern (more than 25%), Minimum in Western (less than 15%)
Northern Serbia 16.76% (
http://www.ncbi.nlm.nih.gov/pubmed/17482396)
Kosovo 47.40%
Macedonia – around 25%
Maximum in Northwestern, Minimum in Southern
Croatia 5 – 10%
http://www.nature.com/ejhg/journal/v17/n6/full/ejhg2008249a.html
Southwestern Romania - around 20%
Here are my sources (including those mentioned above).
Battaglia et al. gives 25.4% of E1b1b for Albanians, 39.1% for Albanians from Macedonia, 23% for Macedonian Greeks, 22.3% for Bosnia Serbs, 10.3% for Osijek Croats, 8.9% for Bosnia Croats, 8.8% for Croats, 2.7% for Slovenians.
Bosch et al. reports 23.3% of E1b1b for Albanians, 23.1% for Macedonians, 12.9% for Romanians from Constanta, 16.7% for Romanians from Ploeisti.
Marjanovic et al. found 22.3% of E1b1b in Bosnia Serbs, 12.9% in Bosniacs, and 8.9% in Bosnia Croats.
Semino et al. shows 20.3% of E1b1b in Macedonian Greeks, 25% in Albanians, 8.8% in Croats, 9.4% in Hungarians, and 8.6% in Ukrainians.
Cruciani et al. (2004) mentions 31.6% of E1b1b in Albanians, 20.7% in Bulgarians, 21.4% in Romanians.
King et al. has 15.2% of E1b1b in Macedonians, 23.6% in Albanians, 8.9% in Hungarians, 6.9% in Croats.
Mirabal et al. found 17.3% of E1b1b in Serbs and 27% in Montenegrins.
Ferri et al. found an average of 30.3% of E1b1b in Albanians.
Kalevi Wiik in
Where did European Men come from ? made averages from various sources and reported 21.6% of E in Albanians, 15% in Macedonians, 17% in Bulgarians, 7.4% in Romanians, 12.8% in Moldovans and 3.1% in Ukrainians.
Greece has been the object of several detailed studies. I have attached a summary.