High frequency acoustic propagation in a range dependent guiding-to-antiguiding ocean channel transition. - T. Ishihara; Leopold B. Felsen (ICASSP, 1986)

Ray methods for modal fields in general closed and open propagation environments. - Leopold B. Felsen (Proc. IEEE, 1991)

Multifrequency reconstruction of moderately rough interfaces via quasi-ray Gaussian beams. - Vincenzo Galdi; David A. Castañón; Leopold B. Felsen (IEEE Trans. Geosci. Remote. Sens., 2002)