Update on September 3rd, 2018
When I am writing a proposal to fund my research, there is often a page or word limit to keep. One of the tricks to stretch this limit is to minimize the references to their bare bones. I used to take an already short reference style, such as the one of Nature or Science, but I still had to trim these reference lists down manually. And for obvious reasons I had enough of that.
So I looked for a minimal style… but I could not find one. Thus I created my own style in Mendeley that generates a bare minimal reference list. It is a CSL (Citation Style Language) file and you can download it here or via a Mendeley-friendly link here. I have since moved to Zotero, where the citation style works flawlessly as well.
The reference list should look as in the screenshot below: only one author, no article title, short journal or publisher name, volume/page numbers, and the year of publication.
I have not found a way to control paragraph style and font format from the CSL file. So to get rid of paragraph breaks and to select a small font size (8–10pt), I have to do some post-processing. Unfortunately, the Mendeley plugin for LibreOffice resets any changes to the bibliography as soon as it refreshes, so the following steps are best left till the end. My solution is to select the Bibliography box and apply a Find and Replace to the paragraph breaks ($) substituting each of them for a single space ( ). Note: to select paragraph breaks one needs to tick the Regular expressions checkbox under Other options.
After that, my minimal citation style looks like this: