(1)
Rana, J. C.; Sharma, B. D.; Jha, B. J.; Kumar, M. Cultivation of <I>Hedychium spicatum< I> (Kapoor Kachari) , <I>Valeriana wallichii< I> and <I>Roscoea purpurea< I> In Hill Regions of India. Indian Forester 2004, 130, 1008-1018.