14. Anonim, How Does Radioactive Decay Work?,
https://sciencestruck.com/how-does-radioactive-decay-work, diakses pada
30 Juni 2018.
15. Henning Umland, High Voltage and X-Ray Experiments,
https://celnav.de/hv/hv5.htm, diakses pada 30 Juni 2018.
58 | Dasar Fisika Radiasi, DPK – BRIN