NASA technical note TN (series). D-4811. Simplified technique for determining pericynthion altitude of lunar orbits [with list of references]; by L. Keith Barker.
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Simplified technique for determining pericynthion altitude of lunar orbits [with list of references]; by L. Keith Barker.
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NASA technical note TN (series). D-4811. Simplified technique for determining pericynthion altitude of lunar orbits [with list of references]; by L. Keith Barker.