N. Ina, P. Kongchaiwat, N. Nantasri, T. Chanchayanon, J. Cheewakul, and W. Thiangsook, “The innovative inlet and outlet positioning device for pelvic X-ray imaging at Songklanagarind Hospital”, Thai J Rad Tech, vol. 46, no. 1, pp. 26–34, Sep. 2021.