Stephen R. Parkinson, António H. A. Emiliano, Encoding Medieval Abbreviations for Computer Analysis (from Latin–Portuguese and Portuguese Non‐literary Sources), Literary and Linguistic Computing, Volume 17, Issue 3, September 2002, Pages 345–360, doi:10.1093/llc/17.3.345
io.gov.mo
bo.io.gov.mo
The official spelling of the Portuguese language in Macau is currently fixed by Decree-Law No. 103/99/M
lexml.gov.br
Brazilian Federal Decree 7875 of 2012 extended the transition through December 2015.