Ab initio study of structures, Metallotropic 1,2-Shifts and Prototropic 1,2-Shift of cyclopentadienyl(Trimethyl)- Silane,-Germane and –Stannane., D.Nori Shargh, H.Aghabozorgh, Dr.Karim Zare ,M.R.Talei, B.Olyai, S.Jameh Bozorghi; Phosphorus, sulphur and silicon,2003,Vol.178, 341-351.