Hoofdstuk 3 („Flight plans”) en hoofdstuk 14, punt 14.1.4 („Flight information region boundaries estimates”) van de „Regional Supplementary Procedures”, Doc 7030/4 — EUR, Deel 1, „Rules of the Air, Air Traffic Services and Search and Rescue”, (Vierde editie 1987 — inclusief amendment nr. 210).
Kapitel 3 (Flight plans) und Kapitel 14, Nummer 14.1.4 (Flight information region boundaries estimates) der Regional Supplementary Procedures, Doc. 7030/4 — EUR, Teil 1 „Rules of the Air, Air Traffic Services and Search and Rescue“, (4. Ausgabe — 1987; Änderung Nr. 210 eingefügt).