Nature 352, 278 - 279 (25 July 1991); doi:10.1038/352278a0

It's all in the timing

David Black

the Lunar and Planetary Institute, Houston, Texas 77058, USA.

References

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2.	Bahcall, J. et al. The Decade of Discovery in Astronomy and Astrophysics (National Academy Press, Washington, DC, 1991).
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