W.  Khwaiphan and Boonkerd, T., ?The pteridophyte flora of Khao Khiao, Khao Yai National Park, Thailand. ?, Natural History Journal of Chulalongkorn UniversityNatural History Journal of Chulalongkorn University, vol. 8, pp. 69-82, 2008.

W.  Khwaiphan, Chomboon, N., Chummak, P., Sangpakdee, K., Siriyan, S., Silprasit, K., Pangthai, D., and Leuangsakul, S., ?Diversity of Ferns and Fern allies in Phu Pha Man National Park, Khon Kaen Province and Loei Province?, Environment and National Resource Institute, Srinakharinwirot University, 2011.