@article {Friedlander:1948:0030-672X:2,
	author = "Friedlander, Max J.",
	title = "Zu Jan Swart van Groningen",
	journal = "Oud Holland",
	volume = "63",
	number = "1-6",
	year = "1948",
	abstract = "",
	pages = "2-9",
	url = "http://www.ingentaconnect.com/content/brill/oh/1948/00000063/F0060001/art00001",
	doi = "doi:10.1163/187501748X00018"
}