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2. S. Ishikawa, R. Suzuki, T. Goka, Y. Yasuda, Conceptual LEO satellite constellation design, in: The Second International Symposium on Spacecraft Ground Control and Data Systems, Brazil, February 1999.
3. R. Suzuki, Y. Yasuda, A study on MSN-ISL topology of LEO constellation, in: International Astronautical Congress 2004, IAC-04-M.5.01, 2004.
4. R. Suzuki, Continuous ISL and satellite diversity in a satellite constellation, IEICE Transactions on Communications E87-B(8) (2004) 2132–2141.