Zimmerman, PatrickPatrickZimmermanJahn, CarlosCarlosJahnWernecke, JuliaJuliaWernecke2022-10-252022-10-252021-10-11https://publica.fraunhofer.de/handle/publica/427923ensustainabilityport feeenvironmentPotentials for Improving the Port Fee Incentive Program "Environmental Ship Index"presentation