Update README.md

Author: sichkar-valentyn

README.md

@@ -6,6 +6,8 @@ Intelligent Navigation System of Mobile Robot.
 Valentyn N Sichkar. Intelligent Navigation System of Mobile Robot // GitHub platform. DOI: 10.5281/zenodo.1317906
 
 ### Related works:
+* Sichkar V.N. Comparison analysis of knowledge based systems for navigation of mobile robot and collision avoidance with obstacles in unknown environment. St. Petersburg State Polytechnical University Journal. Computer Science. Telecommunications and Control Systems, 2018, Vol. 11, No. 2, Pp. 64–73. DOI: <a href="https://doi.org/10.18721/JCSTCS.11206" target="_blank">10.18721/JCSTCS.11206</a>
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 * The investigation of Reinforcement Learning for the tasks of shortest path planning is put in separate repository and is available here: https://github.com/sichkar-valentyn/Reinforcement_Learning_in_Python
 
 * The research results for Neural Network Knowledge Based system for the tasks of collision avoidance is put in separate repository and is available here: https://github.com/sichkar-valentyn/Matlab_implementation_of_Neural_Networks