@article {Bueler2021conservation,
	title = {Conservation laws for free-boundary fluid layers},
	journal = {SIAM J. Appl. Math.},
	volume = {81},
	number = {5},
	year = {2021},
	pages = {2007{\textendash}2032},
	doi = {10.1137/20M135217X},
	author = {E. Bueler}
}
