2E.Ahmed,A.M.A.El-Sayed,H.A.A.El-Saka.On some Routh-Hurwitz conditions for fractional order differential equations and applications in Lorzen,Rossler,Chua and Chen systems.Physics Letters A,358(2006)1-4.
3E.Ahmed,A.M.A.El-Sayed,H.A.A.El-Saka.Equilibrium points,stability and numerical solutions of fractional-order predator-prey and rabies,J.of Math.Analy.Appl.,325(2007)542-553.
4A.Akilbas,H.M.Srivatava,J.J.Trujillo.Theory and Applications of Fractional Differential Equations.Elsevier B.V.,Amsterdams,2006.
1WilliamF Lucas 朱煜民 周宇虹译.微分方程模型[M].国防科技大学出版社,1998-5..
2Rogers E M. Diffusion of innovateion[M]. New York: The Free Press, 1983.
3Dearden J, Ickes B W, Larry Samuelson. To innovate or not innovate: incentives and innovateion in hierarchies[J]. The American Economic Review, 1990.80(3) :618-624.
4Gallini N T, Wright B D. Technology transfer under asymmetric information[M]. RAND J.of Economics, 1990,21(1) :147-159.
