REFERENCES 



225 



///-" IJF IJF IJF //F//F IJF IJF I If ijh l/h ///- /, 



LEGEND 



A ISOPLETHS 

 COLD FRONT 



// 



-500 500 



DISTANCE FROM FRONT , km 



Figure 5.62. Epoch chart, Oklahoma City, Okla., in A units. 



[10] Onoe, M., M. Hirai, and S. Niwa (1958), Results of experiment of long-distance 



overland propagation of ultra-short waves, J. Radio Res. Labs. 5, 79. 

 [11] Hull, R. A. (1935), Air-mass conditions and the bending of ultra-high-frequency 



waves, QST 19, 13-18. 

 [12] Hull, R. A. (1937), Air-wave bending of ultra-high-frequency waves, QST 21, 



16-18. 

 [13] Englund, C. R., A. B. Crawford, and W. W. Mumford (1938), Ultra-short-wave 



radio transmission through the non-homogeneous troposphere, Bull. Am. 



Meteorol. Soc. 19, 356-360. 

 [14] Yerg, D. G. (1950), The importance of water vapor in microwave propagation at 



temperatures below freezing, Bull. Am. Meteorol. Soc. 31, 175-177. 

 [15] Schelleng, J. C, C. R. Burrows, and E. B. Ferrell (1933), Ultra-short-wave 



propagation, Proc. IRE 21, 427-463. 

 [16] Misme, P. (1960), L'influence du gradient equivalent et de la stabiHt6 atmos- 



ph6 rique dans les Haisons transhorizon au Sahara et au Congo, Ann. Telecom- 



mun. 16, 110. 

 [17] Misme, P., B. R. Bean, and G. D. Thayer,(1960), Comments on "Models of the 



atmospheric radio refractive index," Proc. IRE 48, 1498-1501. 

 [18] Gray, R. E. (1957), The refractive index of the atmosphere as a factor in tropo- 



spheric propagation far beyond the horizon, IRE Nat. Convention Record, 



Pt. 1, 3. 



