@misc{sandberg_2006, title={Chemical drawing tools}, volume={83}, number={11}, journal={Journal of Chemical Education}, author={Sandberg, K. A.}, year={2006} }
 @article{shultz_lee_gwaltney_sandberg_1999, title={Electronic properties of bisporphyrin biradical dications}, volume={334}, DOI={10.1080/10587259908023342}, number={1999}, journal={Molecular Crystals and Liquid Crystals Science and Technology. Section A, Molecular Crystals and Liquid Crystals}, author={Shultz, David and Lee, H. and Gwaltney, K. P. and Sandberg, K. A.}, year={1999}, pages={459–467} }
 @article{shultz_sandberg_1999, title={Semiempirical computational assessment of porphyrins as building blocks for molecule-based magnets: spin-spin coupling in radical-substituted metalloporphyrins}, volume={12}, DOI={10.1002/(SICI)1099-1395(199901)12:1<10::AID-POC85>3.3.CO;2-7}, number={1}, journal={Journal of Physical Organic Chemistry}, author={Shultz, David and Sandberg, K. A.}, year={1999}, pages={10–18} }