@article{-_2019, title={Índice}, volume={1}, url={https://topicosdelseminario.buap.mx/index.php/topsem/article/view/593}, DOI={10.35494/topsem.2019.1.41.593}, abstractNote={-}, number={41}, journal={Tópicos del Seminario}, author={-, -}, year={2019}, month={jun.}, pages={3} }