PREET AMOL SINGH and VIDHU AERI, “PHYSICO-CHEMICAL PARAMETERS AND HPTLC FINGERPRINTING PROFILE OF DILLENIA INDICA MIQ. F. ELONGATA (MIQ.) AND TECTONA GRANDIS LINN. WITH REFERENCE TO BETULIN”, ijpbs, vol. 7, no. 1, pp. 217–221, Mar. 2016.