B. Spjelkavik

Focusing of energy: Evaluation of diffraction integrals using local phase and amplitude approximations

J. Stamnes, B. Spjelkavik, H. M. Pedersen, 1981 .

Focusing at small angular apertures in the debye and Kirchhoff approximations

J. Stamnes, B. Spjelkavik, 1981 .

Nonlinear focusing of surface waves by a lens – theory and experiment

J. Stamnes, D. Yue, C. Mei, 1983, Journal of Fluid Mechanics.

Evaluation of the Field near a Cusp of a Caustic

J. Stamnes, B. Spjelkavik, 1983 .