@article{bouloc2018singular,
	title={Singular fibers of the Gelfand--Cetlin system on $\mathfrak{u}(n)$},
	author={Bouloc, Damien and Miranda, Eva and Zung, Nguyen Tien},
	journal={Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences},
	volume={376},
	number={2131},
	pages={20170423},
	year={2018},
	publisher={The Royal Society Publishing}
}