Deflection and fragmentation of near-Earth asteroids. Ahrens, T. J. & Harris, A. W. Nature, 360(6403):429–433, December, 1992.
Deflection and fragmentation of near-Earth asteroids [link]Paper  doi  abstract   bibtex   
The collision with Earth of near-Earth asteroids or comet nuclei poses a potential threat to mankind. Objects about 100 m in diameter could be diverted from an Earth-crossing trajectory by the impact of a rocket-launched mass, but for larger bodies nuclear explosions seem to be the only practical means of deflection. Fragmentation of the body by nuclear charges is less efficient or secure.
@article{ahrens_deflection_1992,
	title = {Deflection and fragmentation of near-{Earth} asteroids},
	volume = {360},
	copyright = {© 1992 Nature Publishing Group},
	issn = {0028-0836},
	url = {https://www.nature.com/nature/journal/v360/n6403/abs/360429a0.html},
	doi = {10.1038/360429a0},
	abstract = {The collision with Earth of near-Earth asteroids or comet nuclei poses a potential threat to mankind. Objects about 100 m in diameter could be diverted from an Earth-crossing trajectory by the impact of a rocket-launched mass, but for larger bodies nuclear explosions seem to be the only practical means of deflection. Fragmentation of the body by nuclear charges is less efficient or secure.},
	language = {en},
	number = {6403},
	urldate = {2017-05-19TZ},
	journal = {Nature},
	author = {Ahrens, Thomas J. and Harris, Alan W.},
	month = dec,
	year = {1992},
	pages = {429--433}
}

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