@article{Clementsen_1958, title={Theodor Bull in memoriam}, volume={78}, url={https://tidsskrift.dk/personalhistorisk_tidsskrift/article/view/79612}, number={13_6_3}, journal={Personalhistorisk Tidsskrift}, author={Clementsen, O. H.}, year={1958}, month={jan.}, pages={122–123} }