@article {Pollak1981-gx,
	title = {A comparison of the independent-samples t-test and the paired-samples t-test when the observations are nonnegatively correlated pairs},
	journal = {Journal of Statistical Planning and Inference},
	volume = {5},
	number = {2},
	year = {1981},
	month = {jan},
	pages = {133{\textendash}146},
	publisher = {Elsevier BV},
	author = {Pollak, Moshe and Cohen, Jiska}
}
