@article{rojas_riemann_franti_1993,  title={MARKOV CHAIN MODELING OF ENDEMIC CATTLE DISEASES IN THE TROPICS OF MEXICO},  volume={23},  ISSN={0103-8478},  url={https://doi.org/10.1590/S0103-84781993000300014},  DOI={10.1590/S0103-84781993000300014},  number={3},  journal={Ciência Rural},  publisher={Universidade Federal de Santa Maria},  author={Rojas, José Alfonso Barajas and Riemann, Hans and Franti, Charles},  year={1993},  month={Sep},  pages={325–328} }