@article{DBLP:journals/jct/Gansner77,
	author={Emden R. Gansner},
	journal={J. Comb. Theory, Ser. A},
	number=2,
	pages={176-179},
	title={A Characterization of Permutations via Skew-Hooks},
	volume=23,
	year=1977,
}