Hasselmann, Klaus F. MPI for Meteorology, Max Planck Society;
Sell , Wolfgang MPI for Meteorology, Max Planck Society;
Crombie, D., Hasselmann, K. F., & Sell, W. (1978). High-frequency radar observations of sea waves travelling in opposition to the wind. Boundary-Layer Meteorology, 13, 45-54. doi:10.1007/BF00913861.