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2. Alberta Department of Energy , "The New Royalty Framework, October 25, 2007 [ http://www.energy.gov.ab.ca/Org/pdfs/royalty_Oct25.pdf
3. API (American Petroleum Institute) , website, 2009 [ http://www.api.org/aboutoilgas/sectors/explore/royalty.cfm
4. Australian Tax Office , "Comparing the New Zealand & Australian Tax Systems," n.d. [ http://www.ato.gov.au/businesses/content.asp?doc=/content/50664.htm
5. Bobylev, Yuriy , "Reformu nado prodolzhat' (Reform Should Be Continued)," Neft' Rossii , 1:72-77, 2008.