@article{Brouwer_2021, title={Pieter Sijpersma, Hans Wiegel. De biografie }, volume={136}, url={https://bmgn-lchr.nl/article/view/11080}, DOI={10.51769/bmgn-lchr.11080}, journal={BMGN - Low Countries Historical Review}, author={Brouwer, Jan-Willem}, year={2021}, month={Oct.} }