[1] A.Tawansi, H.I.AbdeLKader, M.EL-Zalabany andE.M.AbdeLRazek: J Mater. Sci., 1994, 29, 3451. [2] A.Tawansi, H.I.AbdeLKader, W.Balachandran andE.M.AbdeLRazek: J Mater. Sci., 1994, 29, 40O1. [3] A.Tawansi, H.I.AbdeLKader, M.El-Zalabany andM.A.AbdeLKader: mper, in presst 1997. [4] A,Tawansi, H.I.AbdeLKader, M.I.Ayad andE.M.AbdeLRazek: Phaica B, in press, 1997. [5] I.B.Goldberg, H.R.Crow, B.R.Newman, A.J.Heegerand Mac Diarmid: J.Chem. Pfor., 1979, 70, 1132. [6] A.J.Stone: Mo1eculer Plercs, 1963, 6, 509. [7] E.Burzo, M.Chipara, D.Ungur and I.Ardelean: Phys.Status Solidi (b), 1984, 124, K117.v [8] K.Tanaka, K.Kamiya, T.Yoko, S.Tanabe, K.Hirao and N.Soga: J. Non-cryst. Solids, 1989, 109, 289. [9] T.Komatsu and N.Soga: J Chezn. Phys., 1980, 72,1781. [10] M.Symons: Chemjcal and Biocbed Aspects of Electron Spin Resonance Spectroscopy Van Nostrand Reinhold Co., New York, 1978, 130. [11] W.R.Heslop, J.A.A.Ketelaar and A.Buchler: Spec trocbimica Acta, 1960, 16, 5l3. [12] E.A.Paez, W.T.Costerhuis and D.I.Weaver: Chem.Comm., 1970, 20, 506. [13] R.M.El-Shazly M.M.Bekhet, F.I.Taha and A.boi:fons. Met. Chem., 1990, 131, 2159. [14] N.T.Abdel-Ghani, A.Tawansi and S.A.Abdel-Latif:Bull. Soc. Chem. N, 1990, 127, 188. |