@misc{aspelien_assimilation_of_2005, 
author={Aspelien, T.,Weisse, R.},
title={Assimilation of Sea Level Observations for Multi-Decadal Regional Ocean Model Simulations for the North Sea},
year={2005},
howpublished = {GKSS report},
note = {Online available at: \url{} (DOI). Aspelien, T.; Weisse, R.: Assimilation of Sea Level Observations for Multi-Decadal Regional Ocean Model Simulations for the North Sea. GKSS 2005-2. 2005.}}