Karpacheva V.A. (1968) Isolation of 'metabolite-A' from the cattle blood. Its purification and determination of A-vitamin activity. Voprosy Meditsinskoi Khimii, 14(5), 496-502.

et al. Isolation of 'metabolite-A' from the cattle blood. Its purification and determination of A-vitamin activity // Voprosy Meditsinskoi Khimii. - 1968. - V. 14. -N 5. - P. 496-502.

et al., "Isolation of 'metabolite-A' from the cattle blood. Its purification and determination of A-vitamin activity." Voprosy Meditsinskoi Khimii 14.5 (1968): 496-502.

Karpacheva, V. A. (1968). Isolation of 'metabolite-A' from the cattle blood. Its purification and determination of A-vitamin activity. Voprosy Meditsinskoi Khimii, 14(5), 496-502.