@article{Boschloo_1993, title={J.G.S.J. van Maareveen, Briefwisseling van Nicolaas Gerard Pierson 1839-1909, I, 1851-1884}, volume={108}, url={https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-104164}, DOI={10.18352/bmgn-lchr.3631}, number={1}, journal={BMGN - Low Countries Historical Review}, author={Boschloo, T.J.}, year={1993}, month={Jan.}, pages={94–96} }