On Wed, Oct 23, 2019 at 8:58 PM Vladimir Nikishkin <xxxxxx@gmail.com> wrote:
 
The link number [2] Noel Welsh: SchemeUnit. February 2003.
http://schematics.sourceforge.net/schemeunit.html

in the "References" section is dead.

Thank you.  I've fixed that now.  I also fixed the link to the email archives for SRFI 78.