Optimal level of state ownership in banks: prevention measure versus emergency action - evidence from the new millennia. - Emilios Galariotis; Iordanis Kalaitzoglou; Jacek Niklewski; Constantin Zopounidis (Ann. Oper. Res., 2021)

Corporate social responsibility: How much is enough? A higher dimension perspective of the relationship between financial and social performance. - Iordanis Kalaitzoglou; Hui Pan 004; Jacek Niklewski (Ann. Oper. Res., 2021)

Cleaning the carbon market! Market transparency and market efficiency in the EU ETS. - Iordanis Kalaitzoglou (Ann. Oper. Res., 2025)