%0 Conference Proceedings %T Complexation ability of kryptofix 21 with Y3+ and Ce3+ cations in some pure and binary mixed non-aqueous solvents %A SH. Mehdizadeh %A Ronaghi, Gholam Hossein %A M.Mohajeri %J نوزدهمین سمینار شیمی تجزیه ایران %D 2013