Here is the CMT Uptime check phrase
News
Events
Blog
Give
Publications
Software
Contact
About
People
Research
Services
Education
PUBLICATIONS
Proxy Pattern-Mixture Analysis for Survey Nonresponse
Little, Roderick J
; Andridge, Rebecca R. (2011). Proxy Pattern-Mixture Analysis for Survey Nonresponse. Journal of Official Statistics. 27(2), 153-180.