1. Ashcroft B. (2013) Has Scotland Already Spent its Oil Fund? (available at: http://www.scottisheconomywatch.com/brian-ashcrofts-scottish/2013/07/has-scotland-already-spent-its-oil-fund.html) (accessed on June 2014).
2. Ball R., Eiser D. and King D. (2012) Replacing the Barnett Formula by Needs Assessment: Lessons from School Funding Formulae in England and Scotland. University of Stirling Working Paper, Glasgow (available at: http://www.barnett-or-needs.stir.ac.uk/documents/IFSeducationpaperDecember2013.pdf).