LOKHANDE, R.S., MANOJ R. SHARMA, and A.B. CHOUDHARY. “Extractive Spectrophotometric Determination of Cu(II) With Phosphoryl Derivative of P-Tert-butylthiacalix(4)arene”. Asian Journal of Chemistry 19, no. 4 (March 30, 2010): 2531–2535. Accessed August 26, 2024. https://asianpubs.org/index.php/ajchem/article/view/13339.