title: [On the problem of determination of the first half-value layer of X-ray radiation].
authors.forename: M G
authors.initials: MG
authors.lastname: Petrushanskiĭ
mesh_terms: D006801:Humans; D008962:Models, Theoretical; D011829:Radiation Dosage; D014056:Tomography, X-Ray; D014965:X-Rays