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-rw-r--r--math/planarity/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/math/planarity/Makefile b/math/planarity/Makefile
index 574d70498e7d..75b3b10b70fc 100644
--- a/math/planarity/Makefile
+++ b/math/planarity/Makefile
@@ -5,6 +5,7 @@ CATEGORIES= math
MAINTAINER= thierry@FreeBSD.org
COMMENT= Edge Addition Planarity Suite
+WWW= https://dx.doi.org/10.7155/jgaa.00091
LICENSE= BSD3CLAUSE
LICENSE_FILE= ${WRKSRC}/LICENSE.TXT