Nowak, Kamil. “LOW COST RETIREMENT SOLUTIONS BASED ON ROBO-ADVISORS AND EXCHANGE TRADED FUNDS”. Copernican Journal of Finance & Accounting 6, no. 3 (March 24, 2018): 75–94. Accessed April 27, 2024. https://apcz.umk.pl/CJFA/article/view/CJFA.2017.018.