1. Individual monitoring for internal exposure of workers;ICRP Publication 78, Ann. ICRP,1997
2. Individual monitoring of internal exposure for nuclear medicine workers in Switzerland;S Baechler;Radiation Protection Dosimetry,2001
3. Study of nuclear medicine practices in Portugal from an internal dosimetry perspective;J Bento;Radiation Dosimetry,2010
4. Radiation Safety Regulation ata, KINS 2017. Available from: www.rasis.kins.re.kr
5. Regulation on Measurement and Calculation of Internal Radiation Dose, Notice of the NSSC 2014–70 2014. Available from: www.nssc.go.kr.