ASHIQ.M, et al. “SELECTIVE AMPLIFICATION OF CATECHOL 2, 3 DIOXYGENASE GENE FROM HENOL DEGRADING ALCALIGENES SP D2 ISOLATED FROM SOIL”. International Journal of Pharma and Bio Sciences, vol. 4, no. 3, Sept. 2013, pp. 105-10, https://ijpbs.net/index.php/journal/article/view/2554.