On direct and inverse problems related to longitudinal impact of non-uniform elastic rods Jens Burgert
Handbook of Radio Wave Propagation Loss, Part ll (100–20,000 MHz) (NTIA HB-89-242) William E. Frazier
Analysis of Air-Ground Radio Wave Propagation Measurements at 800 MHz (OT/TRER 21) G. D. Gierhart; A. P. Barsis; M. E. Johnson; E. M. Gray; F. M. Copps
A wave-envelope of sound propagation in nonuniform circular ducts with compressible mean flows A. H. Nayfeh, J. E. Kaiser, B. S Shaker
Bibliography and Synopsis of Literature Concerned with Microwave and Millimeter-Wave Propagation Effects (NTIA TR-82-107) Evan J. Dutton; Francis K. Steele
SS0130 Principles Of Radio Wave Propagation Edition A The Army Institute For Professional Development