Update reference to Robert C. Martin's "Acyclic Visitor" paper.
authorRichard Kreckel <kreckel@ginac.de>
Mon, 18 Apr 2016 20:18:20 +0000 (22:18 +0200)
committerRichard Kreckel <kreckel@ginac.de>
Mon, 18 Apr 2016 20:18:20 +0000 (22:18 +0200)
commit1c65b3c7d04ab7123bbc7fc9e420c8bd484927a1
treed94522b911d7bbaad4b1c7aec56afceb69cc010b
parent90cec97dc7de15159ce50bbcc95fdff5179bad48
Update reference to Robert C. Martin's "Acyclic Visitor" paper.

The source at objectmentor.com has been unavailble for a long while.
ginac/basic.h