@article{lópez_iemma_1998,  title={ON THE ESTIMATION AND PREDICTION IN MIXED LINEAR MODELS},  volume={55},  ISSN={0103-9016},  url={https://doi.org/10.1590/S0103-90161998000200019},  DOI={10.1590/S0103-90161998000200019},  number={2},  journal={Scientia Agricola},  publisher={Escola Superior de Agricultura "Luiz de Queiroz"},  author={LÓPEZ, L.A. and IEMMA, A.F.},  year={1998},  month={May},  pages={291–295} }