@article {Zacour 1956,
	title = {A note on the papal election of 1352: the candidacy of Jean Birel},
	journal = {Traditio},
	volume = {13},
	year = {1957},
	pages = {456-462},
	keywords = {Joannes Birel O.Cart. (papatus), papatus},
	author = {Zacour, Norman P.}
}
