deletions | additions       diff --git a/section_Constitutive_relationships_Retardation_factor__.tex b/section_Constitutive_relationships_Retardation_factor__.tex  index 3c1501c..fbe086f 100644  --- a/section_Constitutive_relationships_Retardation_factor__.tex  +++ b/section_Constitutive_relationships_Retardation_factor__.tex 
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\section{Constitutive relationships: Retardation factor due to adsorption}  \begin{align}  R R(C)  = 1 + \frac{\rho}{n} \times \frac{\partial S}{\partial C} \end{align}  \subsection{Freundlich isotherm:}