@misc{https://doi.org/10.4121/1a586cea-b3ce-4981-8db8-464a5cd997be.v1,
  doi = {10.4121/1a586cea-b3ce-4981-8db8-464a5cd997be.v1},
  url = {},
  author = {van der Marel, Hans},
  keywords = {gps, gnss, geodesy, precise-point-positioning, ppp, positioning, reference-frames, gnss-campaign},
  title = {GNSS Precise Point Positioning (PPP) Matlab Toolbox},
  publisher = {4TU.ResearchData},
  year = {2025},
  copyright = {Apache-2.0},
}