TY  - BOOK
AU  - Bergstrom Reinhold
AU  -  Wold Herman
TI  - Fix point estimation in theory and practice
T2  - Applied statistics and econometries
U1  - B280aX, M3 
PY  - 1983///
CY  - Gottingen
PB  - Vandenhoeck and Ruprecht       
KW  - Statistics
ER  -