1. RFC 1034 - Domain Names - Concepts and Facilities, Internet standard;Mockapetris;Internet Engineering Task Force,1987
2. RFC 1035 - Domain Names - Implementation and Specification, Internet standard;Mockapetris;Internet Engineering Task Force,1987
3. DNS as a covert channel within protected networks;Bromberger,2011
4. Mobile cyber defense agents for low throughput DNS-based data exfiltration detection in military networks;Aurisch,2021
5. Hypertext Transfer Protocol (HTTP/1.1);Fielding;Semantics and Content, Internet standard, Internet Engineering Task Force,2014