M. Daoud, K., Q. Mahmood, E. and Y. Salih, M. 2011. Synthesis of Some 1,4-Bis (Substituted 1,3,4-Oxadiazoles and 1,2,4-Triazoles) Benzene From Terephthalic Acid. Journal of Education and Science. 24, 3 (Sep. 2011), 51–60. DOI:https://doi.org/10.33899/edusj.1999.58800.