Update README.md

Author: mgoudarzi90

README.md

@@ -43,7 +43,6 @@ iFogSim2 currently encompasses several new usecases such as:
 
 
 # References
- * Redowan Mahmud, Samodha Pallewatta, Mohammad Goudarzi, and Rajkumar Buyya, iFogSim2: An Extended iFogSim Simulator for Mobility, Clustering, and Microservice Management in Edge and Fog Computing Environments, Journal of Systems and Software (JSS), Volume 190, Pages: 1-17, ISSN:0164-1212, Elsevier Press, Amsterdam, The Netherlands, August 2022.
+ * Redowan Mahmud, Samodha Pallewatta, Mohammad Goudarzi, and Rajkumar Buyya, <A href="https://arxiv.org/abs/2109.05636">iFogSim2: An Extended iFogSim Simulator for Mobility, Clustering, and Microservice Management in Edge and Fog Computing Environments</A>, Journal of Systems and Software (JSS), Volume 190, Pages: 1-17, ISSN:0164-1212, Elsevier Press, Amsterdam, The Netherlands, August 2022.
  * Harshit Gupta, Amir Vahid Dastjerdi , Soumya K. Ghosh, and Rajkumar Buyya, <A href="http://www.buyya.com/papers/iFogSim.pdf">iFogSim: A Toolkit for Modeling and Simulation of Resource Management Techniques in Internet of Things, Edge and Fog Computing Environments</A>, Software: Practice and Experience (SPE), Volume 47, Issue 9, Pages: 1275-1296, ISSN: 0038-0644, Wiley Press, New York, USA, September 2017.
  * Redowan Mahmud and Rajkumar Buyya, <A href="http://www.buyya.com/papers/iFogSim-Tut.pdf">Modelling and Simulation of Fog and Edge Computing Environments using iFogSim Toolkit</A>, Fog and Edge Computing: Principles and Paradigms, R. Buyya and S. Srirama (eds), 433-466pp, ISBN: 978-111-95-2498-4, Wiley Press, New York, USA, January 2019.
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