Poosiri, S., Thongseenuch, S., Saisom, S., & Chanmanee, N. (2019). The invention of natural rubber mixed with high loading bismuth for radiation protection in diagnostic radiology. The Thai Journal of Radiological Technology, 44(1), 8–14. retrieved from https://he02.tci-thaijo.org/index.php/tjrt/article/view/246753