diff --git a/README.md b/README.md
index 547c3f8c..d549451a 100644
--- 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.  
-    A User-Friendly Hybrid Sparse Matrix Class in C++.  
-    Lecture Notes in Computer Science (LNCS), Vol. 10931, pp. 422-430, 2018.
+    An Adaptive Solver for Systems of Linear Equations.  
+    International Conference on Signal Processing and Communication Systems, pp. 1-6, 2020.
 
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