Khan, Mohammad Saleem, Aminur Rehman, and Niaz Mohammad Khan. 1999. “?THERMODYNAMIC AND VISCOMETRIC STUDIES OF POLYBUTADIENE RUBBER IN TOLUENE AT VARIOUS TEMPERATURES”. Biological Sciences - PJSIR 42 (3):117-20. https://v2.pjsir.org/index.php/biological-sciences/article/view/2128.