deletions | additions       diff --git a/Payam.tex b/Payam.tex  index 9773651..219370f 100644  --- a/Payam.tex  +++ b/Payam.tex 
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\citet{Kao_Yodh_Pine_1993} for high-speed experiment;\\  \citet{nderson_Mitchell_Bartlett_2002} describe an experiment where sonic communication is observed.  \item Sound Does Payam assume incompressible flow somewhere -- e.g. when setting up the thin jet equations?     \item (Sound  speed shouldn't depend on viscosity at except for near-supersonic flow. (\href{http://iopscience.iop.org/0370-1301/66/5/303/pdf/0370-1301_66_5_303.pdf}{Or does it?} \href{http://www.engineeringtoolbox.com/sound-speed-water-d_598.html}{Speed of sound table}, \href{http://resource.npl.co.uk/acoustics/techguides/soundpurewater/content.html#LUBBERS}{$c(T,P)$ fits}.) fits}.))  \end{itemize}