A. M. Marin, R. D. Ortiz, S. B. Gutierrez
      Stability in a Holling-Tanner predator-prey model like a Kolmogorov system without periodic orbits via Dulac functions
      Contemporary Engineering Sciences, Vol. 11, 2018, no. 45, 2219-2224
      https://doi.org/10.12988/ces.2018.85232

Copyright © 2018 A. M. Marin, R. D. Ortiz and S. B. Gutierrez. This article is distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.