[1] Christoph A, Wolfgang A, Roswitha J K, Fritz G P, Peter H,
Christian B, Wolfgang E, Stefan W and Andreas S L 2000 Cancer
Res. 60 6641

[2] Shelton D C, Samuel A W and Gregory M L 2007 Curr.
Opinion Biotech. 18 1

[3] Andreas S L, Christoph A and Christian B 2001 J Surg.
Res. 95 200

[4] Widder K J, Morris R M, Poore G H and Senyei A E 1983
Eur. J. Cancer Clin. Oncol. 19 135

[5] Li J P, Wu C H, Gao F, Zhang R Y, Lu Gang, Fu D G, Ch B A
and Wang X M 2006 Bioorg. Med. Chem. L 16 4808

[6] Zhang L Y, Dou Y H, Zhang L and Gu H C 2007 Chin.
Phys. Lett. 24 3253

[7] Ritter J A, Ebner A D, Daniel K D and Stewart K L 2004
J. Magn. Magn. Mater. 280 184

[8] Pulfer S K and Gallo J M 1999 J. Drug Target 6
215

[9] Xiong P, Guo P, Xiang D and He J S 2006 Act Phys.
Sin. 55 4383 (in Chinese)

[10] Pu S L, Chen X F, Di Z Y, Geng T and Xia Y X 2007
Chin. Phys. Lett. 24 483

[11] Chen H T, Ebne A D, Kaminski M D, Rosengart A J and
Ritter J A 2004 J. Magn. Magn. Mater. 280 184

[12] Misael O A, Armin D E and Ritter J A 2006 J.
Magn. Magn. Mater. 310 131

[13] Ovidiu R and Norval J C S 2005 J. Magn. Magn.
Mater. 293 639

[14] Purlani E P and Ng K C 2006 Phys. Rev. E 73
061919

[15] Zhang R Y, Wang X M, Wu C H, Song M, Li J Y, Lv G, Zhou
J, Chen C, Dai Y Y, Gao F, Fu D G, LI X M, Guan Z Q and Chen B A
2006 Nanotechnology 17 3622

[16] Fletcher D 1991 IEEE Trans. Magn. 27 3655

[17] Purlani E P 2001 Permanent Magnet and
Electromechanical Devices: Materials, Analysis and Applications
(New York: Academic)

[18] Pries A P, Secomb T W and Gaehtgens P 1996
Cardiovasc. Res. 32 654