(1939). Topological groups / by L. Pontrjagin. Translated from the Russian by Emma Lehmer.
Chicago-čujuhus (17. p.)Topological Groups / by L. Pontrjagin. Translated from the Russian by Emma Lehmer. 1939.
MLA-čujuhus (9. p.)Topological Groups / by L. Pontrjagin. Translated from the Russian by Emma Lehmer. 1939.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.