@book{15,
	author = {Zhang, Shu Fen and Zhang, Jian-Guo, and Asian Development Bank, Japan,},
	title = {2-level, 4-level and 8-level PWM optical fiber transmission systems},
	publisher = {Asian Institute of Technology,},
	year = {1996},
	series = {Thesis ;},
	address = {Bangkok :},
	note = {A thesis report submitted in partial fulfillment of the requirements for the degree of Master of  Engineering, School of Engineering and Technology},
	url = {http://203.159.5.9/ait-thesis/detail.php?q=B14969}
}