1. 2017. GnuCash’s bug report #723. http://tinyurl.com/4zhjdcua
2. 2021. BugZilla Issue Tracker -. https://bugzilla.mozilla.org
3. 2021. Cohen’s kappa. https://en.wikipedia.org/wiki/Cohen%27s_kappa
4. 2021. GnuCash. https://play.google.com/store/apps/details?id=org.gnucash.android&hl=en_US&gl=US
5. 2021. Images2PDF. https://play.google.com/store/apps/details?id=imagetopdf.pdfconverter.jpgtopdf.pdfeditor&hl=en_US&gl=US