Update documentation.
Change-Id: Idb03741fab9facbbbda85d5a82723f0b4c1c6c60
diff --git a/docs/source/bibliography.rst b/docs/source/bibliography.rst
index a1a9883..e80e483 100644
--- a/docs/source/bibliography.rst
+++ b/docs/source/bibliography.rst
@@ -15,7 +15,11 @@
multiple station analytical stereo triangulation**, Technical
Report 43, Patrick Airforce Base, Florida, 1958.
-.. [Byrd] R.H. Byrd, R.B. Schnabel, and G.A. Shultz, **Approximate
+.. [ByrdNocedal] R. H. Byrd, J. Nocedal, R. B. Schanbel,
+ **Representations of Quasi-Newton Matrices and their use in Limited
+ Memory Methods**, *Mathematical Programming* 63(4):129–-156, 1994.
+
+.. [ByrdSchanbel] R.H. Byrd, R.B. Schnabel, and G.A. Shultz, **Approximate
solution of the trust region problem by minimization over
two dimensional subspaces**, *Mathematical programming*,
40(1):247–263, 1988.
@@ -65,6 +69,9 @@
within a truncated newton method**, *Operations Research Letters*,
9(4):219–221, 1990.
+.. [Nocedal] J. Nocedal, **Updating Quasi-Newton Matrices with Limited
+ Storage**, *Mathematics of Computation*, 35(151): 773--782, 1980.
+
.. [NocedalWright] J. Nocedal & S. Wright, **Numerical Optimization**,
Springer, 2004.
