Key to Impatiens of Thailand and Malaya (1970)
Shimizu Tatemi. 1970. Contributions to the Flora of Southeast Asia II : Impatiens of Thailand and Malaya. The Southeast Asian Studies. 8(2), 187-217, 1970-09 [PDF file]
SHIMIZU Tatemi. 1969. Classification and Geography of Impatiens in Thailand and the Malay Peninsula [in Japanese]. Acta phytotaxonomica et geobotanica. 24(1-2), 43-51: 1969-07-20 [PDF file]