S. A.  Khan, Verma, P., Arbat, A., Gaikwad, S., and Parasharami, V. A., ?Development of enhanced hypericin yielding transgenic plants and somaclones: high throughput direct organogenesis from leaf and callus explants of Hypericum perforatum?, Industrial Crops and Products, vol. 111, pp. 544-554, 2018.