TY  - JOUR
AU  - I. S. Iokhvidov
TI  - Unitary extensions of isometric operators in the Pontrjagin space $\Pi_1$ and continuations in the $\mathfrak{P}_1$ 

JO  - Doklady Akademii Nauk
PY  - 1967
SP  - 758
EP  - 761
VL  - 173
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1967_173_4_a7/
LA  - ru
ID  - DAN_1967_173_4_a7
ER  -