1. ATM Forum, ATM User–network interface specification, version 3.1, 1994
2. ATM Forum, ATM Forum PNNI draft specification, 1996
3. ATM Forum, ATM Forum 95-1145R1: ATS for the UNI3.1 signaling – network side. Part I, 1996
4. ATM Forum, ATM Forum 96-0979: ATS for the UNI3.1 Signaling – user side, 1996
5. ISO/IEC 9646-1, Information Technology – OSI Conformance Testing Methodology and Framework. Part 1: General Concepts, 1994