Iain K. Peddle, Autonomous flight of a model aircraft, MSc Thesis, University of Stellenbosch, 2005.
	Nidal M. Jodeh, Paul A. Blue, Athon A. Waldon, Development of small unmanned aerial vehicle research platform: Modeling and simulation with flight test validation, AIAA, 2006.
	Navabalachandran J, Low J. H, Gerard Leng, Reverse engineering and aerodynamic analysis of a flying wing UAV, Proc. Of RSAF Aerospace Technology Seminar, 2005.
	Jin Fujinaga, Hirishi Tokutake, Shigeru Sunada, Flight controller design and autonomous flight of 60 cm sized UAV, Proc. of 3rd US-European Competition and Workshop on Micro Aerial Vehicle Systems and European Micro Aerial Vehicle Conference and Flight Competition, Toulouse, France, September, 2007, 1-11.
	http://www.//web.mit.edu/drelaPublic/web/avl/
	M.V Cook, Flight Dynamics principles, Elesevier Buttrworth Heinemann, 1997.
	I.J Nagarath, M. Gopal, Control System Engineering, 5th ed New Delhi, New Age International Publishers, 2007.
	Myo Myint, Htin Kyaw Oo, Zaw Min Naing, Yin Mon Myint, PID controller for stability of Piper Cherokes pitch displacement using MATLAB, Proc. of GMSARN International Conference on sustainable Development, Issues and Prospects for the GMS, November, 2008, 1-5.
	http://www.eng.uwi.tt/depts/elec/staff/copeland/ee27B/Ziegler_Nichols.pdf
	Ziegler J, Nichols B, Optimum settings for automatic controllers, Trans. ASME, Vol 64, 1942, 759-766.
	As Chaudhuri, P S Khuntia, S Sadhu, Design of optimally convex controller for pitch control of an aircraft, IE (I) Journal-As, November, Vol 88, 2007, 20-22.
	Branimir Stojiljkovic, Ljubisavasov, Caslav Mitrovic Dragan Cretkovic, The application of the root locus method for the design of pitch controller of an F-104A aircraft, Journal of Mechanical Engineering, Vol 55, 2009, 1-6.
	Kamran Turkoglu, Ugur Ozdemir, Melike Nikvay, Elbrous M. Jafarov, PID Parameter optimization of UAV longitudinal flight control system, World Academy of Science, Engineering and technology 45, 2008, 341-345.
	Daniel Czarkowski, Identification and Optimiztion of PID parameters using MATLAB, Department of computer science, BSc, Thesis, Cork Institute of Technology.
	http://www.swarmintelligence.org/index.php
	Mohammed El-Said El-Telbany, Employing Particle Swarm Optimizer and Genetic Algorithms for Optimal of PID Controllers: A Comparative Study, Computers & Systems Department, Electronics Research Institute El-Tahrir St. Dokki.
	K. N. Krishnanand, D. Ghose, Glowworm swarm optimization for simultaneous capture of multiple local optima of multimodal functions, Technical Report GCDSL 2006/04, Department of Aerospace Engineering, Indian Institute of Science, July. ( http://guidance.aero.iisc.ernet.in/gso.html
	Bernard Etkin, Lloyd Duff Reid, Dynamics of Flight, Stability and Control, 3rd ed. John Wiley Sons.
	Chakravarthi Jada, Modeling and controller design of an Unmanned Aerial Vehicle, ME Thesis, Indian Institute of Science, Bangalore, India, 2010.
	Shashi Prakash Singh, Autonomous landing of Unmanned Aerial Vehicles, MSc Thesis, Indian Institute of Science, Bangalore, India, 2009.
	V. Krishnamurthy, V. Seshadri, A simple and direct method for reducing order of systems using routh approximation in frequency domain, IEEE Transactions on Automatic Control, vol. 22, no. 1, October, 1976, 797-799.