Ж. Милев, „The Pandemic Crisis and the Resulted Risks for the Fully Funded Pension Funds in Central and Eastern Europe“, НТ, бр. 2, стр. 203–216, Апр 2021, отворен на: Юли 22, 2026. достъпен на: https://bjiep.e-dnrs.org/index.php/rp/article/view/5305