TY  - BOOK
AU  - Gupta Madan M
AU  -  Ragade Rammohan K
AU  -  Yager Ronald R
TI  - Advances in fuzzy set theory and applications
U1  - B217un1,N77, L9 
PY  - 1979///
CY  - Amsterdam
PB  - North-Holland publishing comapany     
ER  -