[1] [CITE@en[RFC 2801 - Internet Open Trading Protocol - IOTP Version 1.0]], [TIME[2021-04-11T11:36:33.000Z]], [TIME[2021-04-12T11:18:54.647Z]] <https://tools.ietf.org/html/rfc2801#page-39>

[2] [CITE@en[RFC 2801 - Internet Open Trading Protocol - IOTP Version 1.0]], [TIME[2021-04-11T11:36:33.000Z]], [TIME[2021-04-12T11:19:48.857Z]] <https://tools.ietf.org/html/rfc2801#page-41>

[3] [CITE@en[RFC 2801 - Internet Open Trading Protocol - IOTP Version 1.0]], [TIME[2021-04-11T11:36:33.000Z]], [TIME[2021-04-12T11:39:20.883Z]] <https://tools.ietf.org/html/rfc2801#page-124>

[4] [CITE@en[RFC 2801 - Internet Open Trading Protocol - IOTP Version 1.0]], [TIME[2021-04-11T11:36:33.000Z]], [TIME[2021-04-12T11:40:24.537Z]] <https://tools.ietf.org/html/rfc2801#page-131>