TY  - JOUR
AU  - Yu. G. Dutkevich
TI  - Diameter of the set of midpoints of chords of a~bounded closed set
JO  - Matematičeskie zametki
PY  - 1970
SP  - 831
VL  - 8
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1970_8_6_a16/
LA  - ru
ID  - MZM_1970_8_6_a16
ER  -