A short history of the experimental discovery of superconductors of II kind (Shubnikov phase) that was made by the notable physicist L.V. Shubnikov and his colleagues at the Ukrainian Institute of Physics and Technology (now NSC KIPT) in 1936-1937 is presented. Appreciation of the value of this work and the Abrikosov theory that explained this research study by the prominent specialists in the field of superconductivity is given. The great importance of this discovery for the contemporary physics and current technology is emphasized.

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