Equilibrium points, stability and numerical solutions of fractional-order predator–prey and rabies models E Ahmed, AMA El-Sayed, HAA El-Saka Journal of Mathematical Analysis and Applications 325 (1), 542-553, 2007 | 542 | 2007 |

On some Routh–Hurwitz conditions for fractional order differential equations and their applications in Lorenz, Rössler, Chua and Chen systems E Ahmed, AMA El-Sayed, HAA El-Saka Physics Letters A 358 (1), 1-4, 2006 | 294 | 2006 |

On the fractional-order logistic equation AMA El-Sayed, AEM El-Mesiry, HAA El-Saka Applied Mathematics Letters 20 (7), 817-823, 2007 | 263 | 2007 |

Numerical methods for multi-term fractional (arbitrary) orders differential equations AEM El-Mesiry, AMA El-Sayed, HAA El-Saka Applied Mathematics and Computation 160 (3), 683-699, 2005 | 111 | 2005 |

Numerical solution for multi-term fractional (arbitrary) orders differential equations AMA El-Sayed, AEM El-Mesiry, HAA El-Saka Computational & Applied Mathematics 23 (1), 33-54, 2004 | 108 | 2004 |

On stability, persistence, and Hopf bifurcation in fractional order dynamical systems HA El-Saka, E Ahmed, MI Shehata, AMA El-Sayed Nonlinear Dynamics 56 (1-2), 121, 2009 | 67 | 2009 |

On fractional order models for Hepatitis C E Ahmed, HA El-Saka Nonlinear biomedical physics 4 (1), 1-3, 2010 | 52 | 2010 |

The fractional-order SIS epidemic model with variable population size HAA El-Saka Journal of the Egyptian Mathematical Society 22 (1), 50-54, 2014 | 46 | 2014 |

Numerical solution for the fractional replicator equation E Ahmed, AMA El-Sayed, AEM El-Mesiry, HAA El-Saka International Journal of Modern Physics C 16 (7), 1017-1026, 2005 | 41 | 2005 |

The fractional-order SIR and SIRS epidemic models with variable population size HAA El-Saka Mathematical Sciences Letters 2 (3), 195, 2013 | 25 | 2013 |

Fractional Order Equations and Dynamical Systems HA El-Saka, A El-Sayed Lambrt Academic Publishing, Germany, 2013 | 19* | 2013 |

Backward bifurcations in fractional-order vaccination models HAA El-Saka Journal of the Egyptian Mathematical Society 23 (1), 49-55, 2015 | 13 | 2015 |

Dynamic properties of the fractional-order logistic equation of complex variables AMA El-Sayed, E Ahmed, HAA El-Saka Abstract and Applied Analysis 2012, 2012 | 10 | 2012 |

On the fractional-order logistic equation with two different delays AMA El-Sayed, HAA El-Saka, EM El-Maghrabi Zeitschrift für Naturforschung A 66 (3-4), 223-227, 2011 | 7 | 2011 |

Dynamic analysis of fractional-order predator–prey biological economic system with Holling type II functional response HAA El-Saka, S Lee, B Jang Nonlinear Dynamics, 1-10, 2019 | 6 | 2019 |

On a fractional order study of Middle East respiratory syndrome corona virus (MERS-COV) EM Ahmed, HA El-Saka Journal of Fractional Calculus and Applications 8 (1), 118-126, 2017 | 6 | 2017 |

A fractional order network model for ZIKA H El-Saka, E Ahmed BioRxiv, 039917, 2016 | 6 | 2016 |

On applications of Ulam-Hyers stability in biology and economics E Ahmed, AMA El-Sayed, HAA El-Saka, GA Ashry arXiv preprint arXiv:1004.1354, 2010 | 3 | 2010 |

ON MULTI STRAIN FRACTIONAL ORDER MERS COV MODEL I OBAYA, H EL, EA SAKA, AI ELMAHDY Journal of Fractional Calculus and Applications, 2018 | 2 | 2018 |

THE FRACTIONAL-ORDER LOGISTIC MODEL FOR THE INTERACTION OF DEMAND AND SUPPLY HAA EL-SAKA Journal of Fractional Calculus and Applications, 2012 | 2 | 2012 |