Netopia Router PN Series - Manual (Page 270)

E-2 Reference Guide
Siyan, Karanjit. Internet Firewall and Network Security, Indianapolis:
New Riders Publishing, 1995. Similar to the Chapman and Zwicky
book.
Smith, Philip. Frame Relay Principles and Applications,
Addison-Wesley Publishing Company, 1996. Covers information on
Frame Relay, including the pros and cons of the technology,
description of the theory and application, and an explanation of the
standardization process.