Jens, K., Graeme, D.R., and Stefan, K., “Swarm Intelligence in Animals and Humans”, Trends in Ecology and Evolution, Vol. 25, No.1, pp. 28-34, (2010).
 Yan-fei, Z., and Xiong-min, T., “Overview of Swarm Intelligence”, International Conference on Computer Application and System Modeling (ICCASM 2010), pp .400-401, Taiyuan, China, (2010).
 Kazadi, S., “Swarm Engineering”, Ph.D. Thesis, California Institute of Technology, Pasadena, CA, USA, (2000).
 Brambilla, M., Ferrante, E., Birattari, M., and Dorigo, M., “Swarm Robotics: A Review from the Swarm Engineering Perspective”, Swarm Intelligence, Vol. 7, pp. 1-41, (2013).
 Martinoli, A., Ijspeert, A.J., and Mondada, F., “Understanding Collective Aggregation Mechanisms: from Probabilistic Modeling to Experiments with Real Robots”, Robotics and Autonomous Systems, Vol. 29, No. 1, pp. 51–63, (1999).
 Lerman, K., Galstyan, A., Martinoli, A., and Ijspeert, A.J., “A Macroscopic Analytical Model of Collaboration in Distributed Robotic Systems Artificial Life”, Vol. 7, No. 4, pp. 375–393, (2001).
 Martinoli, A., Easton, K., and Agassounon, W., “Modeling Swarm Robotic Systems: A Case Study in Collaborative Distributed Manipulation”, The International Journal of Robotics Research, Vol. 23, No. 4–5, pp. 415–436, (2004).
 Lerman, K., and Galstyan, A., “Mathematical Model of Foraging in a Group of Robots: Effect of Interference. Autonomous Robots”, Vol. 13, No. 2, pp. 127–141, (2002).
 Trianni, V., Labella, T.H., Gross, R., Sahin, E., Dorigo, M., and Deneubourg, J.L., “Modeling Pattern Formation in a Swarm of Self-assembling Robots”, (Technical Report TR/IRIDIA/2002-12), IRIDIA, Université Libre de Bruxelles, Belgium, (2002).
 Campo, A., and Dorigo, M., “Efficient Multi-foraging in Swarm Robotics”, In Lecture Notes in Artificial Intelligence, Advances in Artificial Life, Proceedings of ECAL, Berlin: Springer, Vol. 4648, pp. 696-705, (2007).
 Winfield, A. F. T., “Towards an Engineering Science of Robot Foraging”, In Distributed Autonomous Robotic Systems Berlin: Springer, Vol. 8, pp. 185-192, (2009).
 Liu, W., and Winfield, A., “Modeling and Optimization of Adaptive Foraging in Swarm Robotic Systems”, International Journal of Robotics Research, Vol. 29, No. 14, pp. 1743–1760, (2010).
 Khozee, A., Aminaiee, A. H., and Ghaffari, A.,” A Swarm Robotic Approach to Distributed Object Pushing using Fuzzy Controllers”, Proceedings of the 2008 IEEE International Conference on Robotics and Biomimetics, Bangkok, Thailand, February 21 -26, (2009).
 Ghaffari, A., and Esfahanian, M. R., ”Using Swarm Robots Based on Leader-followers Method for Spherical Object Manipulation”, Proceeding of the 2013 RSI/ISM International Conference on Robotics and Mechatronics, Tehran, Iran, February 13-15, (2013).
 Ekanayake, S.W., “Formation of Networked Mobile Robots”, Submitted in Fulfillment of the Requirement for the Degree of Doctor of Philosophy, Deakin University, Melbourne, Australia, (2009).
 Gazi, V., “Stability Analysis of Swarms”, Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of the Ohio State University, (2002).
 Gazi, V., “On Lagrangian Dynamics Based Modeling of Swarm Behavior”, Physica D: Nonlinear Phenomena, Vol. 260, pp. 159-175, (2013).