Index: /trunk/doc/release.2015/inputs/lib.bib
===================================================================
--- /trunk/doc/release.2015/inputs/lib.bib	(revision 40594)
+++ /trunk/doc/release.2015/inputs/lib.bib	(revision 40595)
@@ -16420,2 +16420,19 @@
 }
 
+@BOOK{1992nrca.book.....P,
+   author = {{Press}, W.~H. and {Teukolsky}, S.~A. and {Vetterling}, W.~T. and 
+	{Flannery}, B.~P.},
+    title = "{Numerical recipes in C. The art of scientific computing}",
+publisher = {Cambridge: University Press, |c1992, 2nd ed.},
+     year = 1992,
+   adsurl = {http://adsabs.harvard.edu/abs/1992nrca.book.....P},
+  adsnote = {Provided by the SAO/NASA Astrophysics Data System}
+}
+
+@BOOK{Madsen,
+   author = {{Madsen}, K. and {Nielsen}, H.~B. and {Tingleff}, O.},
+    title = "{Methods for Non-Linear Least Squares Problems}",
+publisher = {Lyngby: Informatics and Mathematical Modelling Technical University of Denmark},
+     year = 2004
+}
+