@article {2023,
	title = {De graaf in het veen Over grootgrondbezit en de regie over de middeleeuwse veenontginningen in Zuidwest-Friesland},
	journal = {De Vrije Fries},
	volume = {103},
	year = {2023},
	pages = {48-73},
	author = {Langen, Gilles J. de and Mol, J.A.(Hans)}
}
@inbook {2023,
	title = {The distribution and subdivision of farmland on the medieval and prehistoric salt marshes of the northern Netherlands. A retrogressive model of the (pre-)Frisian farm, based on historical sources from the Early Modern period},
	booktitle = {Embracing the salt marsh: foraging, farming and food preparation in the Dutch-German coastal area up to AD 1600. Studies in honour of Annet Nieuwhof},
	year = {2023},
	pages = {27-56},
	publisher = {Casemate Academic},
	organization = {Casemate Academic},
	chapter = {3},
	address = {Eelde},
	doi = {https://doi.org/10.2307/jj.285042.6},
	url = {https://www.jstor.org/stable/jj.285042.6},
	author = {Langen, Gilles J. de and Mol, J.A.(Hans)},
	editor = {Nicolay, Johan and Schepers, Mans}
}
@inbook {1999,
	title = {De archeologie van vroeg- en vol-middeleeuws Leeuwarden},
	booktitle = {Leeuwarden 750-2000. Hoofdstad van Friesland},
	year = {1999},
	pages = {18-45},
	publisher = {Uitgeverij Van Wijnen},
	organization = {Uitgeverij Van Wijnen},
	address = {Franeker},
	issn = {90-5194-173-0},
	author = {Langen, Gilles J. de},
	editor = {Kunst, Ren{\'e}}
}
