1. Acs, Z. J., Rappai, G., Szerb, L. (2011). Index-building in a system of interdependent variables: The penalty for bottleneck. GMU School of Public Policy Research Paper No. 2011–2024. SSRN: http://ssrn.com/abstrack=1945346 . Accessed 24 June 2013.
2. Aristovnik, A., & Obadić, A. (2014). Measuring relative efficiency of secondary education in selected EU and OECD countries: The case of Slovenia and Croatia. Technological and Economic Development of Economy, 20(3), 419–433. (Online ed.).
3. Aristovnik, A., Pungartnik, A. (2009). Analysis of reaching the Lisbon strategy targets at the national level: The EU-27 and Slovenia. MPRA Paper no. 18090. http://mpra.ub.uni-muenchen.de/18090 . Accessed 21 January 2015.
4. Bourgeais, V., Gebhard, F. (2015). How is the European Union progressing towards its Europe 2020 targets? Eurostat NewsRelease. http://ec.europa.eu/eurostat/documents/2995521/6664132/1-02032015-CP-EN.pdf/e339ff6c-ee5c-4385-9cbc-bce32fbdb8d7
5. Box, G. E. P. (1949). A general distribution theory for a class of likelihood criteria. Biometrika, 36(4), 317–346.