@article {joe1981comparison,
	title = {Comparison of procedures for testing the equality of two survival distributions},
	journal = {Biometrics},
	volume = {37},
	year = {1981},
	pages = {327{\textendash}340},
	publisher = {JSTOR},
	author = {Joe, Harry and Koziol, James A and Petkau, A.John}
}
