Steperov I.Ya. (1958) Magnesium and calcium contents and phosphatase activity of the blood and middle ear secretions in various forms of otitis. Voprosy Meditsinskoi Khimii, 4(4), 304-308.

et al. Magnesium and calcium contents and phosphatase activity of the blood and middle ear secretions in various forms of otitis // Voprosy Meditsinskoi Khimii. - 1958. - V. 4. -N 4. - P. 304-308.

et al., "Magnesium and calcium contents and phosphatase activity of the blood and middle ear secretions in various forms of otitis." Voprosy Meditsinskoi Khimii 4.4 (1958): 304-308.

Steperov, I. Ya. (1958). Magnesium and calcium contents and phosphatase activity of the blood and middle ear secretions in various forms of otitis. Voprosy Meditsinskoi Khimii, 4(4), 304-308.