@article{avanci_ruiz_2021,  title={Technology cycles and the evolution of the knowledge base complexity since the 1980s},  volume={20},  ISSN={2178-2822},  url={https://doi.org/10.20396/rbi.v20i00.8655490},  DOI={10.20396/rbi.v20i00.8655490},  journal={Revista Brasileira de Inovação},  publisher={Universidade Estadual de Campinas},  author={Avanci, Vanessa de Lima and Ruiz, Ana Urraca},  year={2021},  pages={e021001} }