@article{Korthals Altes_1998, title={J.A.F. Wallert, Ontwikkelingslijnen in praktijk en theorie van de wisselbrief 1300-2000}, volume={113}, url={https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-105317}, DOI={10.18352/bmgn-lchr.4621}, number={1}, journal={BMGN - Low Countries Historical Review}, author={Korthals Altes, W.L.}, year={1998}, month={Jan.}, pages={77–79} }