TY  - JOUR
AU  - C. D. Papakyriakopoulos
TI  - On Dehn's lemma and the asphericity of knots
JO  - Matematika
PY  - 1958
SP  - 23
EP  - 47
VL  - 2
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MAT_1958_2_4_a1/
LA  - ru
ID  - MAT_1958_2_4_a1
ER  -