@article{csillag_1987,  title={Oech, Roger von. A whack on the side of the head; how to unlock your mind for innovation},  volume={27},  ISSN={0034-7590},  url={https://doi.org/10.1590/S0034-75901987000200009},  DOI={10.1590/S0034-75901987000200009},  number={2},  journal={Revista de Administração de Empresas},  publisher={Fundação Getulio Vargas, Escola de Administração de Empresas de S.Paulo},  author={Csillag, João Mário},  year={1987},  month={Apr},  pages={59–60} }