[1] Bauer P S 1931 Proceedings of the National Academy of
Sciences of USA 17 311

[2] Bateman H 1931 Phys. Rev. 38 815

[3] Caldirola P 1941 Nuovo Cimento 18 393

[4] Xu G O and Xu M J 2005 Chin. Phys. Lett. 22 1303

[5] Xu G O, Xu M J and Yang Y T 2005 Chin. Phys. Lett. 22
1573

[6] Ray J R 1979 Am. J. Phys. 47 626

[7] Englman R and Yahalom A 2003 Phys. Lett. A 314 367

[8] Loudon R 1970 J. Phys. A 3 233

[9] Ruppin R 2002 Phys. Lett. A 299 309

[10] Cui T J and Kong J A 2004 Phys. Rev. B 70 205106

[11] Riewe F 1996 Phys. Rev. E 53 1890

[12] Riewe F 1997 Phys. Rev. E 55 3581

[13] Miller K S and Ross B 1993 An Introduction to the Fractional
Calculus and Fractional Differential Equations (New York: Wiley)

[14] Landau L D, Lifshitz E M and Pitaevskii L P 1984
Electrodynamics of Continuous Media 2nd edn (Oxford: Pergamon)

[15] Jackson J D 1999 Classical Electrodynamics 3rd edn (New
York: Wiley) chap 6

[16] Smith D R and Kroll N 2000 Phys. Rev. Lett. 85 2933

[17] Shelby R A, Smith D R and Schultz S 2001 Science 292
77

[18] Pendry J B and Smith D R 2004 Physics Today 57(2)
37

[19] Grbic A and Eleftheriades G V 2004 Phys. Rev. Lett. 92
117403

[20] Jiang H T, Chen H, Li H Q and Zhang Y W 2005 Chin. Phys.
Lett. 22 884

[21] Quan B G, Li C, Sui Q, Li J J, Liu W M, Li Fang and Gu C Z 2005
Chin. Phys. Lett. 22 1243

[22] Goldstein H 1950 Classical Mechanics (Reading, MA: Addison-Wesley)

[23] Broadbent C, Hovhammisyan G, Peatross J, Clayton M and Glasgow S
2002 arXiv: physics/0207117

[24] Rosenberg R M 1977 Analytical Dynamics of Discrete Systems
(New York: Plenum) chaps 10 and 16

[25] Meirovitch L 1970 Methods of Analytical Dynamics (New York:
McGraw-Hill) chap 2