Hassan, A. S., F. Afroz, L. S. Bari, J. L. Munshi, M. A. A. Jahan, and R. Khatun. “Callus Induction and High Frequency Regeneration of Plantlets of Scoparia Dulcis L., a Perennial Medicinal Herb, Through Auxiliary Shoot Proliferation”. Plant Tissue Culture and Biotechnology, vol. 18, no. 1, Sept. 2009, pp. 75-83, doi:10.3329/ptcb.v18i1.3268.