{{sfn|Berlin|1988|p=}}

* {{cite book | last=Berlin | first=Peter | title=The Geostationary Applications Satellite | publisher=Cambridge University Press | publication-place=Cambridge [Cambridgeshire] ; New York | date=1988 | isbn=978-0-521-33525-6}}

<ref name="z487">{{cite book | last=Berlin | first=Peter | title=The Geostationary Applications Satellite | publisher=Cambridge University Press | publication-place=Cambridge [Cambridgeshire] ; New York | date=1988 | isbn=978-0-521-33525-6 | page=}}</ref>