@book{156,
	author = {Ogata, Katsuhiko.},
	title = {Modern Control Engineering.},
	publisher = {PHI learning,},
	year = {2010.},
	series = {Prentice-Hall electrical engineering series. Instrumentation and controls series},
	address = {New Delhi :},
	edition = {5th ed.},
	url = {https://books.google.com.pk/books/about/Modern_Control_Engineering.html?id=Wu5GpNAelzkC&source=kp_book_description&redir_esc=y}
}