TY  - BOOK
AU  - Chentsov A G
AU  - Morina S I
TI  - Extensions and relaxations
SN  - 1-4020-0579-2
U1  - 515.73 
PY  - 2002///
CY  - Dordrecht
PB  - Kluwer Academic
KW  - Extensions
KW  - Topological spaces
ER  -