Update reference.rst

Author: Evolutionary-Intelligence

docs/sphinx/source/reference.rst

@@ -53,6 +53,10 @@ Critical Papers to Some Metaphors-Based Optimization
 * 2020: `Benchmarking in optimization: Best practice and open issues
   <https://arxiv.org/abs/2007.03488>`_
   https://doi.org/10.48550/arXiv.2007.03488
+* 2019: `The * algorithm: why it cannot be considered a novel
+  algorithm: A brief discussion on the use of metaphors in
+  optimization <https://link.springer.com/article/10.1007/s11721-019-00165-y>`_
+  https://doi.org/10.1007/s11721-019-00165-y
 * 2019: `Bio-inspired computation: Where we stand and what's next
   <https://www.sciencedirect.com/science/article/abs/pii/S2210650218310277>`_
   https://doi.org/10.1016/j.swevo.2019.04.008