V. Ya. Frenkel, B. E. Yavelov. Jejnshtejn-izobretatel. In Russian/ in. I. Frenkel, B. E. Yavelov. Einstein-inventor. In Russian, n/a - landofmagazines.com

TransliterationV. Ya. Frenkel, B. E. Yavelov. Jejnshtejn-izobretatel. In Russian

In Englishin. I. Frenkel, B. E. Yavelov. Einstein-inventor. In Russian, n/a

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