[Tex/LaTex] How to generate multiple, numeric-style citation call-outs

citing

In my kile documents, I want to add multiple citations. For this I use the command 

\cite{cristo,taylor,polgar,phillips,speirs,simoes,roberto}

The names in this command give numeric references, which is what I wanted, but not in the way I want it. It gives [1,2,3,4,5,6,7] instead of [1,2,4-8]. Is there any other way to manage this?
My bibliography style is elsarticle-num, and I use bibtex for the bibliography.

I use this preamble in my document:

\documentclass[review,preprint,twocolumn,3p]{elsarticle}
\usepackage{graphicx}
\usepackage{color}
\usepackage{url}
\usepackage{ctable}
\usepackage{booktabs}
\usepackage{cite}
\usepackage{tabularx}
\usepackage{array}
\usepackage{soul}
\usepackage{multirow}
\usepackage{lineno}
\usepackage{subfigure}
\usepackage{amssymb,amsmath}
\newcommand{\tab}{\hspace{5mm}}

Best Answer

(Answer modified after the OP provided additional, crucial information about the document's setup.)

Since you're using the elsarticle document class, which loads the natbib citation management package, just issue the command 

\biboptions{numbers,sort&compress}

in the preamble. This instructs natbib to sort and compress numeric-style citations. (Note that there seems to be a typo in the documentation of the elsarticle document class: The option should be spelled numbers rather than number.)

Perfect!! This command works greatly for elsarticle

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