Some from my side, most are indirectly related, where orekit has been used for some simulations but not the focus of the paper.
Dreischer, T., Thieme, B., Bacher, M., Buchheim, K., Hyvönen, P. “OPTEL-µ: A Compact System for Optical Downlinks from LEO Satellites” In. Proc. 12th International Conference on Space Operations (SpaceOps), AIAA, 2012, https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=02f611e6c5388ce924311b04b21da288fcefb5a4
Eilertsen, B., Hyvönen, P. “Ground station networks vs. GEO relay satellites for polar orbiting satellites data download” In. Proc. 12th International Conference on Space Operations, AIAA, Stockholm, 2012 https://arc.aiaa.org/doi/pdf/10.2514/6.2012-1290826
Hyvönen, P., Eilertsen, B. “Ground vs. satellite relay based data download from low Earth orbit – a technical, financial and commercial comparison”, In Proc. 64th International Astronautical Congress, Beijing, China, 2013
Hyvönen, P., Baister, G., Vidmark, A.,. “Operations of optical ground networks for small satellites”, ESA Small Satellites, System & Services Symposium, 2016
Hemberg, A. “Automated booking and scheduling for CubeSats: Development of an automated Scheduling engine for satellite communication with emphasis on communication with CubeSats”, Thesis work, 2015, https://kth.diva-portal.org/smash/get/diva2:790544/FULLTEXT01.pdf
Hyvönen, P., Vidmark, A., Francou, L., & Baister, G. “On-board terminal developments and operations of optical ground networks for small satellites”. SpaceOps Conference 2018. https://arc.aiaa.org/doi/pdf/10.2514/6.2018-2477
Browne Mwakyanjala, M., Hyvönen, P., de Oliveira, E. J., & van de Beek, J. “Feasibility of using a software‐defined baseband for multiple space per aperture (MSPA) ground operations.” International Journal of Satellite Communications and Networking*, 40(2), 133-147., 2022, https://onlinelibrary.wiley.com/doi/epdf/10.1002/sat.1420