* RFC 1436 - Internet Gopher Protocol<ref>[https://www.rfc-editor.org/rfc/rfc1436.html RFC 1436 - Internet Gopher Protocol], March 1993</ref> | * RFC 1436 - Internet Gopher Protocol<ref>[https://www.rfc-editor.org/rfc/rfc1436.html RFC 1436 - Internet Gopher Protocol], March 1993</ref> |