Add KKT-note to references

diff --git a/refs.bib b/refs.bib
index 30a29eb95bf852f538b8c38b2ec1876a13075c8d..c3dbbb95250b8381abc37c5e73612ea686b84cda 100644 (file)
--- a/refs.bib
+++ b/refs.bib
@@ -4,7 +4,13 @@
        isbn={9780387303031},
        lccn={2006923897},
        series={Springer series in operations research},
-       url={http://books.google.no/books?id=eNlPAAAAMAAJ},
        year={2006},
        publisher={Springer}
 }
+
+@article{kktnote,
+       title={{K}arush–{K}uhn–{T}ucker {T}heorem},
+       author={Harald E. Krogstad},
+       url={http://www.math.ntnu.no/~hek/Optimering2012/kkttheoremv2012.pdf},
+       year={2012}
+}