TI  - Evaluation of excess lifetime cancer risk caused by external exposure due to natural radioactivity in Bolu, Turkey
AU  - ATEŞ, N.Z.
AU  - BAYRAK, K.
AU  - TURGAY, M.E.
AU  - KAM, E.
SO  - Sigma Journal of Engineering and Natural Sciences 2020;38:945-954.
DO  -