Reference or clarification for flipping.

[kylemann16]

The algorithm is based on flips The ears are filled by flipping

Found in howitworks.md lines 13 and 17. Is this referring to the Lawson Flip Algorithm? If so, this should be referenced inline.

I see you referencing it in ref.bib:23, but not for this section.

If this is not a reference to Lawson, then an explanation/link to an explanation should probably be included.