@article {petkau1978sequential,
	title = {Sequential medical trials for comparing an experimental with a standard treatment},
	journal = {Journal of the American Statistical Association},
	volume = {73},
	number = {362},
	year = {1978},
	pages = {328{\textendash}338},
	publisher = {Taylor \& Francis Group},
	author = {Petkau, AJ}
}
