@article {layton2009using,
	title = {Using integral equations and the immersed interface method to solve immersed boundary problems with stiff forces},
	journal = {Computers \& fluids},
	volume = {38},
	number = {2},
	year = {2009},
	pages = {266{\textendash}272},
	publisher = {Pergamon},
	author = {Layton, Anita T}
}