TY  - JOUR
AU  - Ya. L. Kreinin
TI  - On perfect compact nuclei of sets, effectively different from all $\Phi$-sets
JO  - Doklady Akademii Nauk
PY  - 1958
SP  - 436
EP  - 438
VL  - 118
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1958_118_3_a4/
LA  - ru
ID  - DAN_1958_118_3_a4
ER  -