Documentation update.

Update modeling.rst and solving.rst to reflect
changes to the API.

Change-Id: Id1a8adfed1486f08e5fd67c5af2d29708a26490c
diff --git a/docs/source/bibliography.rst b/docs/source/bibliography.rst
index 7ba435a..bd99758 100644
--- a/docs/source/bibliography.rst
+++ b/docs/source/bibliography.rst
@@ -48,6 +48,12 @@
    preconditioning for bundle adjustment**, *In Proceedings of the
    IEEE Conference on Computer Vision and Pattern Recognition*, 2012.
 
+.. [Kanzow] C. Kanzow, N. Yamashita and M. Fukushima,
+   **Levenberg–Marquardt methods with strong local convergence
+   properties for solving nonlinear equations with convex
+   constraints**, *Journal of Computational and Applied Mathematics*,
+   177(2):375–397, 2005.
+
 .. [Levenberg] K. Levenberg, **A method for the solution of certain
    nonlinear problems in least squares**, *Quart. Appl.  Math*,
    2(2):164–168, 1944.
@@ -113,7 +119,3 @@
    Levenberg Marquardt Method for Large Sparse Nonlinear Least
    Squares**, *Journal of the Australian Mathematical Society Series
    B*, 26(4):387–403, 1985.
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