Wipaporn Sawangmee, Thunya Taychasinpitak, Peeranuch Jompuk, and Shinji Kikuchi. 2011. “Effects of Gamma-Ray Irradiation in Plant Morphology of Interspecific Hybrids Between Torenia Fournieri and Torenia Baillonii”. Agriculture and Natural Resources 45 (5). Bangkok, Thailand:803-10. https://li01.tci-thaijo.org/index.php/anres/article/view/245363.