deletions | additions       diff --git a/Payam.tex b/Payam.tex  index 4d3f777..0277472 100644  --- a/Payam.tex  +++ b/Payam.tex 
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\item \citet{1995PhyA..214..185E},  \citet{Espanol_Rubio_Zuniga_1995},  \citet{Clercx_1997},  \citet{Kao_Yodh_Pine_1993} \citet{Kao_Yodh_Pine_1993},   \citet{10.1103/PhysRevLett.88.088302}  \end{itemize}  \item Payam has (equation 12) $v_{\rm DNA}=F_{\rm ext} \ln(\ell/d)/\eta\ell - \lambda E\ln(1+r_{\rm D}/d)/\eta$, which we use to calculate $t_{\rm D}$. He finds $t_{\rm D}\sim \ell\eta/E\lambda$ -- whence this simplification?