SINGH, ISHWAR, ASHOK K. SHARMA, SANJIV K. YADAV, DEVENDER SINGH, and SANG DO HAN. “Synthesis and Analytical Studies of a New Bis-Azo Dye: 2,6-Bis(9-Hydroxyphenanthryl-10-Azo) Pyridine ”. Asian Journal of Chemistry 15, no. 1 (March 30, 2010): 185–190. Accessed November 29, 2024. https://asianpubs.org/index.php/ajchem/article/view/21523.