TY  - BOOK
AU  - Helsley,David A.
AU  - Kuh,Edwin jtauthor
AU  - Welsch,Roy E.jtauthor
TI  - Regression diagnostics: Idenitifying influential data and sources of collinerity 
SN  - 0471058564
PY  - 1980///
CY  - New York
PB  - Wiley
KW  - Regression analysis
N1  - Includes bibliography and indexes; Open access
ER  -