1. Propagation of electromagnetic waves over the spherical earth across boundaries separating different earth media;Furutsu;J. Radio Res. Lab.,1955
2. Wave propagation over an irregular terrain;Furutsu;J. Radio Res. Lab.,1957
3. Wave propagation over an irregular terrain;Furutsu;J. Radio Res. Lab.,1957
4. On the theory of radio wave propagation over inhomogeneous earth;Furutsu;J. Res. Natl. Bur. Stand., Sect. D.,1963
5. On the statistical theory of electromagnetic waves in a fluctuating medium (I;Furutsu;J. Res. Natl. Bur. Stand., Sect. D.,1963