diff --git a/doc/bib.xml.bib b/doc/bib.xml.bib
index a51bc24..64ed725 100644
--- a/doc/bib.xml.bib
+++ b/doc/bib.xml.bib
@@ -3,22 +3,29 @@
 
 
 @misc{ Digraphs0.15.2,
-  author =           {De Beule, J. and Jonusas, J. and Mitchell, J. and Torpey, M. and Wilson, W.},
-  title =            {{Digraphs}, Graphs, digraphs, and multidigraphs in GAP, {V}ersion 0.15.2},
+  author =           {De  Beule,  J.  and  Jonusas,  J. and Mitchell, J. and
+                      Torpey, M. and Wilson, W.},
+  title =            {{Digraphs},  Graphs,  digraphs,  and  multidigraphs in
+                      GAP, {V}ersion 0.15.2},
   month =            {Apr},
   year =             {2019},
   note =             {GAP package},
-  howpublished =     {\href {https://gap-packages.github.io/Digraphs} {\texttt{https://gap-packages.github.io/}\discretionary {}{}{}\texttt{Digraphs}}},
+  howpublished =     {\href        {https://gap-packages.github.io/Digraphs}
+                      {\texttt{https://gap-packages.github.io/}\discretionary
+                      {}{}{}\texttt{Digraphs}}},
   keywords =         {},
   printedkey =       {BJMTW19}
 }
 @misc{ GRAPE4.8.2,
   author =           {Soicher, L. H.},
-  title =            {{GRAPE}, GRaph Algorithms using PErmutation groups, {V}ersion 4.8.2},
+  title =            {{GRAPE},  GRaph  Algorithms  using PErmutation groups,
+                      {V}ersion 4.8.2},
   month =            {Mar},
   year =             {2019},
   note =             {Refereed GAP package},
-  howpublished =     {\href {https://gap-packages.github.io/grape} {\texttt{https://gap-packages.github.io/}\discretionary {}{}{}\texttt{grape}}},
+  howpublished =     {\href           {https://gap-packages.github.io/grape}
+                      {\texttt{https://gap-packages.github.io/}\discretionary
+                      {}{}{}\texttt{grape}}},
   keywords =         {graph; geometry; design},
   printedkey =       {Soi19}
 }
@@ -40,8 +47,10 @@ @article{ Nauty:2014
 }
 @inproceedings{ Bliss:2007,
   author =           {Junttila, T. and Kaski, P.},
-  booktitle =        {Proceedings of the Meeting on Algorithm Engineering \& Expermiments},
-  title =            {Engineering an Efficient Canonical Labeling Tool for Large and Sparse Graphs},
+  booktitle =        {Proceedings of the Meeting on Algorithm Engineering \&
+                      Expermiments},
+  title =            {Engineering  an  Efficient Canonical Labeling Tool for
+                      Large and Sparse Graphs},
   publisher =        {Society for Industrial and Applied Mathematics},
   address =          {Philadelphia, PA, USA},
   year =             {2007},