Productivity and quality changes in Greek public hospitals. - Roxani Karagiannis; Kostas Velentzas (Oper. Res., 2012)

A system-of-equations two-stage DEA approach for explaining capacity utilization and technical efficiency. - Roxani Karagiannis (Ann. Oper. Res., 2015)

The Use of Information Entropy and Expert Opinion in Maximizing the Discriminating Power of Composite Indicators. - Matheus Pereira Libório; Roxani Karagiannis; Alexandre Magno Alvez Diniz; Petr Iakovlevitch Ekel; Douglas Alexandre Gomes Vieira; Laura Cozzi Ribeiro (Entropy, 2024)

Distance-based weighting methods for composite indicators, with applications related to energy sustainability. - Roxani Karagiannis; Giannis Karagiannis (Int. Trans. Oper. Res., 2025)