Mathematical approach to determine the linear attenuation coefficient without collimator in gamma-ray spectrometry.Published in:Radiation Protection Dosimetry, 2013, v. 155, n. 2, p. 236, doi. 10.1093/rpd/ncs329By:Kim, Chang-Jong;Cho, Yoon-Hae;Byun, Jong-In;Yun, Ju-YongPublication type:Article