The summer issue of Croatian Operational Research Review (CRORR) journal – Volume 12, Number 1, 2021 is published. The issue consists of 8 original scientific papers from the area of operational research and related fields, such as applied mathematics, simulation, machine learning and others. All scientific papers were sent to at least two independent reviewers for a double blind peer review process

See papers published in this issue. The next issue is expected to be published in winter 2021.