About Duplicated Research Outputs
1. By default, works have a common identifier (such as a DOI, ISBN, etc.) will be automatically grouped together to represent the same item. Each group of works is shown in a single box. If there are multiple sources of the same item, it would display the number of sources in the "preferred source".
2. You can remove the duplicated entries manually by clicking the "trash can" icon at the right hand side.