@article {91,
	title = {<a href="https://arxiv.org/abs/1611.08003">The Breakdown of String Perturbation Theory for Many External Particles</a>},
	journal = {Phys. Rev. Lett},
	volume = {118},
	year = {2016},
	pages = {131602},
	author = {Sudip Ghosh and Raju, Suvrat}
}
