@article{souza_gomes_2013,  title={Scale of operation, allocative inefficiencies and separability of inputs and outputs in agricultural research},  volume={33},  ISSN={0101-7438},  url={https://doi.org/10.1590/S0101-74382013005000007},  DOI={10.1590/S0101-74382013005000007},  number={3},  journal={Pesquisa Operacional},  publisher={Sociedade Brasileira de Pesquisa Operacional},  author={Souza, Geraldo da Silva e and Gomes, Eliane Gonçalves},  year={2013},  month={Sep},  pages={399–415} }