TY  - JOUR
AU  - Yu. G. Dutkevich
TI  - Diameter of the set of midpoints of chords of a~bounded closed set
JO  - Matematičeskie zametki
PY  - 1969
SP  - 233
EP  - 236
VL  - 6
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1969_6_2_a11/
LA  - ru
ID  - MZM_1969_6_2_a11
ER  -