@article{souza_detmann_valadares filho_costa_pina_gomes_queiroz_mantovani_2013,  title={Accuracy of the estimates of ammonia concentration in rumen fluid using different analytical methods},  volume={65},  ISSN={0102-0935},  url={https://doi.org/10.1590/S0102-09352013000600024},  DOI={10.1590/S0102-09352013000600024},  number={6},  journal={Arquivo Brasileiro de Medicina Veterinária e Zootecnia},  publisher={Universidade Federal de Minas Gerais, Escola de Veterinária},  author={Souza, N.K.P. and Detmann, E. and Valadares Filho, S.C. and Costa, V.A.C. and Pina, D.S. and Gomes, D.I. and Queiroz, A.C. and Mantovani, H.C.},  year={2013},  month={Dec},  pages={1752–1758} }