• Sub-commission 2.2 : Methodology for geoid and physical weight systemsAgren, Jonas; Ellmann, ArtuIAG Reports 2015-2019 : Commission 2 - Gravity Field2019 / p. 33-38 https://iag.dgfi.tum.de/fileadmin/IAG-docs/Travaux2019/02_Commission_2_2015-2019.pdf