TAPPERT: SELECTED APPLICATIONS OF THE PARABOLIC-EQUATION METHOD IN 

 UNDERWATER ACOUSTICS 



quite accurate within that cone. But I could never see a really good 

 way to connect different cones without getting an interference pattern, 

 a spurious interference pattern, where they connect. But if you have 

 a way to do that, it would be quite an improvement. 



Dr. Fitzgerald: 1 do. 



Dr. Tappert: Good. 



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