@article{Pottiaux:4656,
      author        = "Pottiaux, E.  and Van Malderen, R. and Klos, A. and
                       Alshawaf, F. and Bock, O. and Bogusz, J. and Chimani, B.
                       and Domonkos, P. and Elias, M. and Guijarro, J. A. and
                       Ning, T. and Tornatore, V. and Zengin, S.",
      title         = "{Towards the Homogenization of GNSS Tropospheric Delay
                       Time Series: Status and Recent Developments}",
      month         = "Apr",
      year          = "2019",
}