@article {2012,
	title = {Master Wiger of Utrecht{\textquoteright}s Liber exemplorum sub titulis redactorum},
	journal = {Journal of Medieval History},
	volume = {38},
	year = {2012},
	pages = {443-471},
	author = {Winter, David Ross}
}
@article {2005,
	title = {The life and career of Master Wiger of Utrecht (fl. 1209-1237): an early convert to the Order of Friars Minor},
	journal = {Journal of Medieval History},
	volume = {31},
	year = {2005},
	pages = {71-126},
	author = {Winter, David Ross}
}
