1. The Scrophulariaceae of the Western Himalayas, Reprint 1997;Pennell,1943
2. The pharmacological effect of Picrohiza;Yang;Pharm. J. Chin. PLA,2003
3. Three new cyclopentanoid monoterpenes from Picrorhiza scrophulariiflora;Wang;Planta Med.,2004
4. Chemical studies on iridoids from Picrorhiza scrophulariilflora;Wang;Chin. J. Nat. Med.,2006
5. Two new compounds from Picrorhiza scrophulariiflora;Xie;Chin. J. Pharm.,2007