@article{guimarães_2007,  title={The systemic concept of the gene, at age fifteen, and comments on C.N. El-Hani's article 'Between the cross and the sword: the crisis of the gene concept'},  volume={30},  ISSN={1415-4757},  url={https://doi.org/10.1590/S1415-47572007000400033},  DOI={10.1590/S1415-47572007000400033},  number={3},  journal={Genetics and Molecular Biology},  publisher={Sociedade Brasileira de Genética},  author={Guimarães, Romeu Cardoso},  year={2007},  pages={709–710} }