Author: Thomas Holder Format: MarkdownItexAdded a reference to a recent paper.
<a href="https://ncatlab.org/nlab/revision/diff/regular+logic/6">diff</a>, <a href="https://ncatlab.org/nlab/revision/regular+logic/6">v6</a>, <a href="https://ncatlab.org/nlab/show/regular+logic">current</a>