TY  - BOOK
AU  - Kolmogoroff A N
TI  - Unbiased estimates
U1  - 510T 
PY  - 1953///
CY  - Providence
PB  - AMS
KW  - Mathematics
N1  - Tr from Izvestiya Akademii Nauk SSSR. Seriya Matematiceskaya, 1950
ER  -