Some journals accept the reference list only as \bibitems. If you use BibTeX, there is no problem: just paste the content of the .bbl file into your document. However, there was no out-of-the-box way to do the same for BibLaTeX, and you had to struggle with searching appropriate .bst files, or formatting your reference list by hand, or something like that. Using the workaround provided by this package solves the problem.