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-rw-r--r--libraries/ghc-prim/GHC/Types.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/libraries/ghc-prim/GHC/Types.hs b/libraries/ghc-prim/GHC/Types.hs
index 215f96cdd7..ce526b454d 100644
--- a/libraries/ghc-prim/GHC/Types.hs
+++ b/libraries/ghc-prim/GHC/Types.hs
@@ -260,7 +260,7 @@ class a ~~ b
-- @type role Set nominal@
--
-- For more details about this feature, please refer to
--- <http://www.cis.upenn.edu/~eir/papers/2014/coercible/coercible.pdf Safe Coercions>
+-- <http://research.microsoft.com/en-us/um/people/simonpj/papers/ext-f/coercible.pdf Safe Coercions>
-- by Joachim Breitner, Richard A. Eisenberg, Simon Peyton Jones and Stephanie Weirich.
--
-- @since 4.7.0.0