The relationship between operational efficiency and financial efficiency in the shipping industry: An example from privatized ports in TürkiyeEbru Nur Kaya, Mevlüt Hürol Mete and Önder BelginRAIRO-Oper. Res., 59 6 (2025) 3601-3619DOI: https://doi.org/10.1051/ro/2025136