References:
- The Nessus Attack Scripting Language Reference Guide
- The NASL2 reference manual
- Writing NASL Scripts
- Book: Nessus, Snort, & Ethereal Power Tools: Customizing Open Source Security Tools
- Book: Penetration Tester’s Open Source Toolkit, Volume 1
- Book: Nessus Network Auditing
- NASL Language Definition for Notepad++