PazandK. 2014. Concentration and distribution of selenium in Iranian coals, Environmental Nanotechnology, Monitoring and Management, 3, 55–60.
2.
RyanB. and DittrickM. 2000. Selenium in the Mist Mountain Formation of Southeast British Columbia, BCGS Geological Fieldwork, 2001-1, 337–362.
3.
FinkelmanR. B., OremW., CastranovaV., TatuC. A., BelkinH. E., ZhengB., LerchH. E., MaharajS. V. and BatesA. L. 2002. Health impacts of coal and coal use: possible solutions, International Journal of Coal Geology, 50, 425–443. doi: 10.1016/S0166-5162(02)00125-8