@article{700828,
     title = {Otnosheniia smezhnosti i $H$-zamknutye rasshirniia},
     booktitle = {General Topology and its Relations to Modern Analysis and Algebra},
     series = {GDML\_Books},
     publisher = {Academia Publishing House of the Czechoslovak Academy of Sciences},
     address = {Praha},
     year = {1967},
     pages = {195-199},
     mrnumber = {MR0242122},
     zbl = {0172.47602},
     url = {http://dml.mathdoc.fr/item/700828}
}

Ivanova, V. M.; Ivanov, A. A. Отношения смежности и $H$-замкнутые расширния, dans General Topology and its Relations to Modern Analysis and Algebra, GDML_Books,  (1967), pp. 195-199. http://gdmltest.u-ga.fr/item/700828/