From f956d27ec91f4d35ee6eba81291e3fd851e6b0ce Mon Sep 17 00:00:00 2001
From: Kristian Evers <kristianevers@gmail.com>
Date: Fri, 12 Oct 2018 11:03:59 +0200
Subject: Add docs for the horner operation

---
 docs/source/references.bib | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'docs/source/references.bib')

diff --git a/docs/source/references.bib b/docs/source/references.bib
index 0fb077ec..7b1e876b 100644
--- a/docs/source/references.bib
+++ b/docs/source/references.bib
@@ -197,6 +197,18 @@
   Url                      = {https://archive.org/details/DTIC_ADA026294}
 }
 
+@article{Ruffhead2016,
+    author = {A. C. Ruffhead},
+    title = {Introduction to multiple regression equations in datum transformations and their reversibility},
+    journal = {Survey Review},
+    volume = {50},
+    number = {358},
+    pages = {82-90},
+    year  = {2016},
+    publisher = {Taylor & Francis},
+    doi = {10.1080/00396265.2016.1244143},
+}
+
 @Book{Snyder1993,
   Title                    = {Flattening the Earth},
   Author                   = {J. P. Snyder},
-- 
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