TY  - BOOK
AU  - Hettmansperger,T.P.
AU  - McKean, J.W.
TI  - Robust nonparametric statistical methods
SN  - 0-471-19479 4
U1  - 519.234 
PY  - 1998///
CY  - London
PB  - Arnold
KW  - Statistical methods-robust nonparaametric
ER  -