Shapiro M.Ia. (1963) A new colorimetric method for the determination of copper in biological material. Voprosy Meditsinskoi Khimii, 9(3), 298-300.

et al. A new colorimetric method for the determination of copper in biological material // Voprosy Meditsinskoi Khimii. - 1963. - V. 9. -N 3. - P. 298-300.

et al., "A new colorimetric method for the determination of copper in biological material." Voprosy Meditsinskoi Khimii 9.3 (1963): 298-300.

Shapiro, M. Ia. (1963). A new colorimetric method for the determination of copper in biological material. Voprosy Meditsinskoi Khimii, 9(3), 298-300.