@article{id_12972, title = "Global Height System Unification with GOCE: A Simulation Study on the Indirect Bias Term in the GBVP Approach", author = "Gerlach, Christian and Rummel, Reiner", journal = "Journal of Geodesy", volume = "87", year = "2012", pages = "1-11", url = "https://doi.org/10.1007/s00190-012-0579-y", }