1 files changed, 7 insertions, 0 deletions
diff --git a/greedy/sub.bib b/greedy/sub.bib
index 5adbe9b..e5e6e8c 100644
--- a/greedy/sub.bib
+++ b/greedy/sub.bib
@@ -96,3 +96,10 @@
   organization={Association for Computational Linguistics}
 }
 
+@book{schrijver2003,
+  title={Combinatorial optimization: polyhedra and efficiency},
+  author={Schrijver, Alexander},
+  volume={24},
+  year={2003},
+  publisher={Springer}
+}