Fukagawa, H., Pedoe, D.: Japanese Temple Geometry Problems
. Charles Babbage Research Center, Winnipeg 1989. MR 1044556
 Fukagawa, H., Rigby, J. F.: Traditional Japanese Mathematics Problems of the 18th and 19th Centuries
. SCT Press, Singapore, v tisku. MR 2005730
| Zbl 1059.01002
 Rothman, T., Fukagawa, H.: Japanese Temple Geometry. Scientific American, May 1998.
 Suzuki, F.: Equilateral triangles pass through three vertices of a square. Mathematical gazette, v tisku.