Pontri︠a︡gin, L. S. Topological groups. Translated from the Russian by Emma Lehmer. - London H. Milford, Oxford University Press 1946. - ix, 299 p. 23 cm. - Princeton mathematical series 2 . - Princeton mathematical series 2. . Bibliography: p. 295-296. LCCN: 91052291 //r84 Subjects--Topical Terms: TopologyGroups, Continuous. LC Class. No.: QA611 / .P62 1958 Dewey Class. No.: 513.83