@article{DAN_1980_251_5_a7,
     author = {E. N. Mikhailov},
     title = {On the duality in categories of topological groups},
     journal = {Doklady Akademii Nauk},
     pages = {1059--1062},
     publisher = {mathdoc},
     volume = {251},
     number = {5},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_251_5_a7/}
}