#1.  	Larry L. Peterson and Bruce S. Davie, 
	"Computer Networks - A system approach"
	Morgan Kaufmann Pbulishers, Inc.
	ISBN: 1-55860-368-9

#2.  	W. Richard Stevns,
	"UNIX Network Programming Volume I Second Edition
		- Network APIs: Scokets and XTI"
	Prentice Hall, 
	ISBN: 0-13-490012-X

	(Japanese Translation is published from TOPPAN
	ISBN 4-8101-8612-1 by Yoichi Shinoda.)