https://opg.optica.org/prj/fulltext.cfm?uri=prj-9-2-259&id=447050 https://opg.optica.org/prj/fulltext.cfm?uri=prj-9-2-259&id=4... / https://web.archive.org/web/

https://opg.optica.org/prj/fulltext.cfm?uri=prj-9-2-259&id=447050 https://opg.optica.org/prj/fulltext.cfm?uri=prj-9-2-259&id=4... / https://web.archive.org/web/20220310183454/https://opg.optica.org/prj/fulltext.cfm?uri=prj-9-2-259&id=447050 https://web.archive.org/web/20220310183454/https://opg.optic... Further reading for those interested