@article {layton2003region,
	title = {A region-based model framework for the rat urine concentrating mechanism},
	journal = {Bulletin of mathematical biology},
	volume = {65},
	number = {5},
	year = {2003},
	pages = {859{\textendash}901},
	publisher = {Springer-Verlag},
	author = {Layton, Anita T and Layton, Harold E}
}