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-rw-r--r--microkernel.mdwn5
1 files changed, 4 insertions, 1 deletions
diff --git a/microkernel.mdwn b/microkernel.mdwn
index eb46408e..e706dcbd 100644
--- a/microkernel.mdwn
+++ b/microkernel.mdwn
@@ -9,4 +9,7 @@ The idea of a microkernel as explained above was first explored
by Per Brinch-Hansen in 1970 in
[The Nucleus of a Multiprogramming System](http://brinch-hansen.net/papers/1970a.pdf).
-Other notable microkernels include Hydra, KeyKOS, Eros. \ No newline at end of file
+Other notable microkernels include Hydra, KeyKOS, Eros and L4.
+
+An [introduction](http://www.cs.cornell.edu/Info/People/ulfar/ukernel/ukernel.html) by
+Ăšlfar Erlingsson and Athanasios Kyparlis (from 1996) to microkernel concepts. \ No newline at end of file