adding references in citation

docs/source/citation.rst

 Citing GBOML
 ------------
-An early version of the GBOML framework was introduced in a recent paper: https://www.frontiersin.org/articles/10.3389/fenrg.2021.671279/full.
-GBOML has been published in the Journal of Open-Source Software : https://joss.theoj.org/papers/10.21105/joss.04158.
+An early version of the GBOML framework was introduced in a paper: https://www.frontiersin.org/articles/10.3389/fenrg.2021.671279/full.
+GBOML software has been published in the Journal of Open-Source Software : https://joss.theoj.org/papers/10.21105/joss.04158.
+The inner workings of GBOML and a benchmark have been discussed in a recent paper published in Optimization Methods and Software : https://www.tandfonline.com/doi/full/10.1080/10556788.2023.2246169 .
 
 To cite the software :
 
@@ -20,3 +21,18 @@ To cite the software :
       journal = {Journal of Open Source Software}
     }
 
+.. code-block::
+
+    @article{Miftari2023,
+        author = {Bardhyl Miftari, Mathias Berger, Guillaume Derval, Quentin Louveaux and Damien Ernst},
+        title = {GBOML: a structure-exploiting optimization modelling language in Python},
+        journal = {Optimization Methods and Software},
+        volume = {0},
+        number = {0},
+        pages = {1-30},
+        year = {2023},
+        publisher = {Taylor & Francis},
+        doi = {10.1080/10556788.2023.2246169},
+        URL = {https://doi.org/10.1080/10556788.2023.2246169},
+        eprint = {https://doi.org/10.1080/10556788.2023.2246169}
+    }