Wave data assimilation in a 3rd generation wave prediction model for the North Sea : an optimal control approach / C.F. de Valk, C.J. CalkoenAssimilation of TIR imagery in numerical models as a tool for water management / C.F de Valk, O.C. SwertzFeasibility of extracting current profile information from HF-radar surface current measurements : part I and II / C.F. de Valk, R.E. Klein, H.C. PetersA large deviations approach to the statistics of extreme events / door Cees Fouad de ValkA large deviations approach to the statistics of extreme events / Cees Fouad de Valk