The article about implementing the Ascon algorithm on an hp16 was mentioned on the museum of HP forum https://www.hpmuseum.org/forum/thread-24733.html
Other articles such as https://dram.page/p/crc-tricks/ and https://dram.page/p/heyting-algebra are interesting too.
The latter was rendered by
  pandoc --mathjax -f markdown-smart < heyting.md > index.html
from its markdown source.