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This is to certify that your paper entitled «An L_۱ then L_۰ approach to the cardinality constrained mean-variance and mean-CVaR portfolio optimization problems» was indexed with 18 pages, in the CIVILICA citation database, code COI:JR_JMMF-4-1_007, after evaluation and approval of the referees of the "Journal of Mathematics and Modeling in Finance Vol 4, Issue 1 , Year 2024.

While offering our congratulations on the indexation of your paper, please be informed that this certificate is prepared based on the information submitted by the secretariat of the above journal and the information contained in the CIVILICA database, and the accuracy of its content can be inquired at any time through link provided at the bottom of the page or scanning the code image.