diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -83,8 +83,8 @@ Citations are useful for the continued development and maintenance of the librar
     Journal of Open Source Software, Vol. 1, pp. 26, 2016.  
   
   * Conrad Sanderson and Ryan Curtin.  
-    An Adaptive Solver for Systems of Linear Equations.  
-    International Conference on Signal Processing and Communication Systems, pp. 1-6, 2020.
+    A User-Friendly Hybrid Sparse Matrix Class in C++.  
+    Lecture Notes in Computer Science (LNCS), Vol. 10931, pp. 422-430, 2018.
 
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diff --git a/docs.html b/docs.html
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@@ -202,13 +202,8 @@ Conrad Sanderson and Ryan Curtin.
 <br>
 <br>
 Conrad Sanderson and Ryan Curtin.
-<br><i><a href="armadillo_solver_2020.pdf">An Adaptive Solver for Systems of Linear Equations</a></i>.
-<br>International Conference on Signal Processing and Communication Systems, pp.&thinsp;1-6, 2020.
-<!--
-Conrad Sanderson and Ryan Curtin.
 <br><i><a href="armadillo_lncs_2018.pdf">A User-Friendly Hybrid Sparse Matrix Class in C++</a></i>.
 <br>Lecture Notes in Computer Science (LNCS), Vol.&nbsp;10931, pp.&nbsp;422-430, 2018.
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