TY  - BOOK
AU  - Viertl Reinhard
TI  - Statistical methods for non-precise data
SN  - 0-8493-8242-4
U1  - 000SA.1 
PY  - 1996///
CY  - Boca Raton
PB  - CRC Press
KW  - Fuzzy sets
KW  - Mathematical statistics
ER  -