Justicia adhatoda L. vasicin and vasicinone as bioactive phytochemical compounds: Isolation, characterization, and computational studies oleh Cheemalapati Venkata Narasimhaji, Vijay Kumar, Murugammal Shanumugam, Ravindra Singh, Arjun Singh, Gokul Marimuthu, Ilavarasan Raju, Narayanam Srikanth, Rabinarayan Acharya