How to reduce the size of the citation(like [1]) generated by \cite{1} tag in latex

Wikipedia neatly superscripts n reduces the size of all the citations. Is there a way 开发者_运维百科to get it in latex.

I would suggest you to look into natbib which improves citation usage compared to vanilla LaTeX, and allows much easier customization. To make citations appear in superscript ^[1] you would add the super option; numbers in square brackets are activated by numbers and square, respectively, i.e. add

\usepackage[square, numbers, super]{natbib}

in the preamble of your document. I also like to use commas to separate entries (comma) and activate automatic compression of adjacent references^[1-12,42] (sort&compress).