| Citation: | Chen Yufu, Zhang Hongqing. A Generalization of Recursion Operators of Differential Equations[J]. Applied Mathematics and Mechanics, 1999, 20(11): 1143-1148. | 
 
	                | [1] | Ablowits M J,Kaup D J,Newell A C,et al.The inverse scaterse scattering transform——Fourier analysis for nonlinear problems[J].Stud Appl Math,1974,53(4):249~315. | 
| [2] | Miura R M,Gardner C S,Kruskal M D.Korteweg-de Vries equation and generalizations Ⅰ,Ⅱ[J].J Math Phys,1968,9(8):1202~1209. | 
| [3] | Magri F.A simple model of the integrable Hamiltonian equations[J].J Math Phys,1978,19(5):1156~1162. | 
| [4] | Olver P J.Applications of Lie Groups to Differential Equations[M].New York:Springer-Verlag,1986. | 
| [5] | Olver P J.Evolution equations possessing infinitely many symmetries[J].J Math Phys,1997,18(6):1212~1215. | 
| [6] | Krasil'shchik I S,Vinogradov A M.Nonlocal treads in the geometry of differential equations,symmetries,conservation laws,and Backlund transformations[J].Acta Appl Math,1989,15(2):161~209. | 
| [7] | Ayse Karasu,Jordan KdV systems and painleve property[J].Int J Theo Phys,1997,36(3):705~713. | 
| [8] | Khor'kova N G.Conservation laws and nonlocal symmetries[J].Math Notes,1989,44(4):562~568. | 
| [9] | Wahlquist H D,Estabrook F B.Prolongation structures of nonlinear evolution equations[J].J Math Phys,1975,16(1):1~7. | 
| [10] | Dodd R K.The general prolongation formulae for nonlocal symmetries[J].Phys Lett,1994,A195:125~127. | 
| [11] | Bluman G W,Kumei S.Symmetries and Differential Equations[M].New York:Springer-Verlag,1989. | 
| [12] | Krasil'shchik I S,Kersten P H M.Deformations and recursion operators for evolution equation[A].Geometry in Partial Differential Equations[C].World Scientific Publishing Co.1994,114~155. | 
| [13] | 张鸿庆.弹性力学方程组一般解的统一理论[J].大连理工大学学报,1978,17(3):23~27. | 
| [14] | 张鸿庆.力学的代数化、机械化、辛化与几何化[A].见:在第七届现代力学与数学会议(MMM-Ⅶ)上的报告[C],1997,20~25. | 
