%0 Conference Proceedings %T Thermodynamic study of complex formation between 4\',4\'\'(5\'\')-Di-tert-butyldibenzo-18-crown-6 and lantanium(III) ion in some binary non-aqueous solvents using a conductometric method %A Z. Ilkhani %A S. Akbari %A Ronaghi, Gholam Hossein %J نوزدهمین سمینار شیمی تجزیه ایران %D 2013