TY  - JOUR
AU  - V. I. Vasyunin
TI  - Some extremal problems for martingale transforms. II
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 2024
SP  - 5
EP  - 39
VL  - 537
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_2024_537_a0/
LA  - ru
ID  - ZNSL_2024_537_a0
ER  -