Display All References in The Article

As we know, the BibTex under LaTex is one of the most proficient tools for handling bibliography. Normally we only want the reference session to include the specific items which we have cited in the article. However, in some cases, we would like to have a more elaborate control over bibliography. For instance, when making presentations with Beamer class, there might not be enough space or not necessary in the slides to cite each reference, but we still want the un-cited reference to appear at the end. Then the following code could be useful:

\nocite{*}

Just put it before the bibliography style declaration.