1. Propagation of radio waves along a real earth's surface, Izvestia;Feinberg;An. SSSR, ser. fiz.,1943
2. Propagation ofradio waves along a real earth's surface, Izvestia;Feinberg;An. SSSR, ser. fiz.,1944
3. Investigations of the propagation of radio waves;Feinberg,1948
4. An integral equation approach to the problem of wave propagation over an irregular surface;Hufford;Quart. Appl. Math.,1952