Khavkin I.A. (1971) Simple device for creating a linear-discontinuous gradient of concentrations of eluting solutions. Voprosy Meditsinskoi Khimii, 17(5), 550-552.

et al. Simple device for creating a linear-discontinuous gradient of concentrations of eluting solutions // Voprosy Meditsinskoi Khimii. - 1971. - V. 17. -N 5. - P. 550-552.

et al., "Simple device for creating a linear-discontinuous gradient of concentrations of eluting solutions." Voprosy Meditsinskoi Khimii 17.5 (1971): 550-552.

Khavkin, I. A. (1971). Simple device for creating a linear-discontinuous gradient of concentrations of eluting solutions. Voprosy Meditsinskoi Khimii, 17(5), 550-552.