updated showcase

docs/src/showcase.rst

@@ -257,6 +257,10 @@ Pymunk has been used or referenced in a number of scientific papers.
 
 List of papers which has used or mentioned Pymunk:
 
+#. Enander, Jonas MD, Gerald E. Loeb, and Henrik Jorntell. 
+   "A Model for Self-Organization of Sensorimotor Function: Spinal Interneuronal Integration." 
+   Journal of Neurophysiology (2022)
+
 #. Shen, Jeremy, Erdong Xiao, Yuchen Liu, and Chen Feng. 
    "A Deep Reinforcement Learning Environment for Particle Robot Navigation and Object Manipulation." 
    arXiv preprint arXiv:2203.06464 (2022).
@@ -520,7 +524,7 @@ List of papers which has used or mentioned Pymunk:
    "Dynamic Robot Path Planning Among Crowds in Emergency Situations."
 
 
-List last updated 2022-01-05. If something is missing or wrong, please contact 
+List last updated 2022-05-03. If something is missing or wrong, please contact 
 me!
 
 .. (list made using "Chicago" style citation)