@article {layton2004two,
	title = {Two modes for concentrating urine in rat inner medulla},
	journal = {American Journal of Physiology-Renal Physiology},
	volume = {287},
	number = {4},
	year = {2004},
	pages = {F816{\textendash}F839},
	publisher = {American Physiological Society},
	author = {Layton, Anita T and Pannabecker, Thomas L and Dantzler, William H and Layton, Harold E}
}