STANAG No. 4090 (Edition 2)(PDF) (2 ed.). North Atlantic Treaty Organization. 15 April 1982. p. C-1. Archived(PDF) from the original on 4 October 2016. Retrieved 23 April 2016.
STANAG No. 4090 (Edition 2)(PDF) (2 ed.). North Atlantic Treaty Organization. 15 April 1982. p. C-1. Archived(PDF) from the original on 4 October 2016. Retrieved 23 April 2016.