@article{harvey_lawson_2001, title={Lefschetz-Pontrjagin duality for differential characters}, volume={73}, ISSN={0001-3765}, url={https://doi.org/10.1590/S0001-37652001000200001}, DOI={10.1590/S0001-37652001000200001}, number={2}, journal={Anais da Academia Brasileira de Ciências}, publisher={Academia Brasileira de Ciências}, author={HARVEY, REESE and LAWSON, BLAINE}, year={2001}, month={June}, pages={145–159} }