--- a/docs/testimonials.rst	2019-11-15 20:39:19.000000000 +0800
+++ b/docs/testimonials.rst	2019-11-18 22:04:10.536776209 +0800
@@ -56,8 +56,8 @@
 * `Ransom et al. (2014) <https://arxiv.org/abs/1401.0535>`_
 * `Pérez et al. (2014) <https://arxiv.org/abs/1402.0832>`_
 * `Oliver et al. (2014) <http://dx.doi.org/10.1063/1.4866813>`_
-* `Narbutis et al. (2014) <https://arxiv.org/abs/1410.2514>`_
-* `Narbutis et al. (2014) <https://arxiv.org/abs/1410.2521>`_
+* `Narbutis et al. (2014a) <https://arxiv.org/abs/1410.2514>`_
+* `Narbutis et al. (2014b) <https://arxiv.org/abs/1410.2521>`_
 * `Schlaufman & Casey (2014) <https://arxiv.org/abs/1409.4775>`_
 * `Kirichenko et al. (2015) <https://arxiv.org/abs/1501.04594>`_
 * `Privon et al. (2015) <https://ui.adsabs.harvard.edu/abs/2015ApJ...814...39P>`_