diff --git a/doc/references.rst b/doc/references.rst
index 60baa19cfd0050e40f64e7be3fc8ee8771b294cb..c12f301e35b331745c20084b6d024c4e3bdaae61 100644
--- a/doc/references.rst
+++ b/doc/references.rst
@@ -18,7 +18,6 @@ References
                   Resultants and loop closure. International Journal of Quantum 
                   Chemistry. 
 
-
 .. [chakravarty1999] Chakravarty S, Varadarajan R (1999). 
                      Residue depth: a novel parameter for the analysis of 
                      protein structure and stability. Structure.
@@ -47,9 +46,6 @@ References
                Exploring the conformational space of protein side chains using 
                dead-end elimination and the A* algorithm. Proteins.
 
-.. [lovell2000] Lovell SC, Word JM, Richardson JS, Richardson DC (2000). 
-                The penultimate rotamer library. Proteins.
-
 .. [shapovalov2011] Shapovalov MV and Dunbrack RL Jr. (2011). 
                     A smoothed backbone-dependent rotamer library for proteins 
                     derived from adaptive kernel density estimates and 
@@ -59,7 +55,6 @@ References
                 Protein homology detection by HMM-HMM comparison. 
                 Bioinformatics.
 
-
 .. [solis2006] Solis AD, Rackovsky S (2006). Improvement of statistical 
                potentials and threading score functions using information 
                maximization. Proteins.