Podobnik, B.; Shao, J.; Njavro, D.; Ivanov, P. C.; Stanley, H. E. (2008). „Influence of corruption on economic growth rate and foreign investment“. The European Physical Journal B. 63-jild, № 4. 547-bet. arXiv:0710.1995. Bibcode:2008EPJB...63..547P. doi:10.1140/epjb/e2008-00210-2.
Wilhelm, Paul G. (2002). „International Validation of the Corruption Perceptions Index: Implications for Business Ethics and Entrepreneurship Education“. Journal of Business Ethics. 35-jild, № 3. Springer Netherlands. 177–189-bet. doi:10.1023/A:1013882225402.
Podobnik, B.; Shao, J.; Njavro, D.; Ivanov, P. C.; Stanley, H. E. (2008). „Influence of corruption on economic growth rate and foreign investment“. The European Physical Journal B. 63-jild, № 4. 547-bet. arXiv:0710.1995. Bibcode:2008EPJB...63..547P. doi:10.1140/epjb/e2008-00210-2.
Podobnik, B.; Shao, J.; Njavro, D.; Ivanov, P. C.; Stanley, H. E. (2008). „Influence of corruption on economic growth rate and foreign investment“. The European Physical Journal B. 63-jild, № 4. 547-bet. arXiv:0710.1995. Bibcode:2008EPJB...63..547P. doi:10.1140/epjb/e2008-00210-2.