> Multivolume work
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1:
A study of an SCN using data relay spacecraft in highly elliptical orbits 1 Final report; ESA contract No. 8641/89/F/RD(SC) Rider 2
Stevenage, Hertfordshire: British Aerospace, 19XX-
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2:
A study of an SCN using data relay spacercraft in highly elliptical orbits 2 The study of the use of a space communications network using data relay satellites in highly elliptical orbits : Executive summary; ESA contract No. 8641/89/F/RD(SC) Rider 2
Stevenage, Hertfordshire: British Aerospace, 19XX-