AKHTAR, L. H., and M. A. MIRZA. ā€œ PHYTAGEL ANDTHIAMINE ON FURTHER GROWTH OF LEAF AND PETIOLE-DERIVED CALLUS CULTURES OF GOSSYPIUMHIRSUTUM Lā€. Biological Sciences - PJSIR, vol. 40, no. 1-4, Apr. 1997, pp. 1-3, https://v2.pjsir.org/index.php/biological-sciences/article/view/2319.