I wrote a program to do symbolic integration as my undergrad project around 2010. I had (still have) Bronstein's book which I had pored over for the best part of a year. I had also visited his website[0] and found tons of useful info there. You know when you read so much of and about a person you almost feel like you know them?
It wasn't until right at the end of the project I happened across an obituary[1]. He'd been dead the whole time. It was a very strange feeling. Like I had been in communication with a ghost.
It's such a shame as I feel like he probably would have finished the Risch algorithm eventually.
[0] https://www-sop.inria.fr/cafe/Manuel.Bronstein/
[1] http://www.ccas.ru/sabramov/ps/PCS56.pdf