Ince, E. S., Barthelmes, F., Reißland, S., Elger, K., Förste, C., Flechtner, F. (2019): ICGEM - 15 years of Successful Collection and Distribution of Gravity Field Models, Associated Services and Future Plans - Abstracts, 27th IUGG General Assembly (Montreal, Canada 2019), IUGG19, G02p-379.