Wipaporn Sawangmee, Thunya Taychasinpitak, Peeranuch Jompuk, and Shinji Kikuchi, “Effects of Gamma-ray Irradiation in Plant Morphology of Interspecific Hybrids between Torenia fournieri and Torenia baillonii”, Agr. Nat. Resour., vol. 45, no. 5, pp. 803–810, Oct. 2011.