@article{campbell_hollenbeck_yeomans_zhong_1998, title={Mixed symbolic-numerical computations with general DAEs - I: System properties}, volume={19}, ISSN={["1017-1398"]}, DOI={10.1023/A:1019154423096}, number={1-4}, journal={NUMERICAL ALGORITHMS}, author={Campbell, SL and Hollenbeck, R and Yeomans, K and Zhong, Y}, year={1998}, pages={73–83} }
 @inbook{campbell_hollenbeck_1996, title={Automatic differentiation and implicit differential equations}, booktitle={Computational differentiation: Techniques, applications, and tools}, publisher={Philadelphia: SIAM}, author={Campbell, S. L. and Hollenbeck, R.}, editor={B. Berz, C. Bischof and G. Corliss and Griewank, A.Editors}, year={1996} }