How to create nomenclature list for a journal with a different style?

Question

I am trying to figure out the exact format of creating a nomenclature list like the one shown below:

Here is a sample code I've been trying to tweak to meet the above:

\documentclass{article} 
\usepackage{amssymb} 
\usepackage{nomencl} 
\makenomenclature 
 \usepackage{etoolbox} 
 \renewcommand\nomgroup[1]{% v 
 \item[\bfseries 
 \ifstrequal{#1}{A}{Abbreviations}{% 
 \ifstrequal{#1}{S}{Symbols}{% 
 \ifstrequal{#1}{O}{Other symbols} 
  {}}}% ]} 

 % ----------------------------------------- 
 \begin{document} 
 \nomenclature[A]{\(c\)}{Speed of 
  light in a vacuum} 
 \nomenclature[A]{\(h\)}{Planck 
 constant} 
 \nomenclature[A]{\(G\)} 
 {Gravitational constant} 
 \nomenclature[S]{\(\mathbb{R}\)} 
 {Real numbers} 
 \nomenclature[S]{\(\mathbb{C}\)} 
 {Complex numbers} 
 \nomenclature[O]{\(\mathbb{H}\)} 
 {Quaternions} 
 \nomenclature[O]{\(V\)}{Constant 
 volume} 
 \nomenclature[O]{\(\rho\)}{Friction 
 index} 
 \printnomenclature 
 \end{document}

Your timely responses will be appreciated.