ANCHAL ARPITA GOCHHAYAT, et al. “Standardization of Sterilization Time and Plant Bioregulators for Callus Formation in Hybrid Lilium Cv. Fangio”. International Journal of Pharma and Bio Sciences, vol. 8, no. 2, June 2017, pp. 613-7, doi:10.22376/ijpbs.2017.8.2.b613-617.