Semi-Instrumental Variables: A Test for Instrument Admissibility.

Tianjiao Chu Richard Scheines Peter Spirtes Semi-Instrumental Variables: A Test for Instrument Admissibility. 83-90 2001 conf/uai/2001 UAI http://rome.exp.sis.pitt.edu/UAI/Abstract.asp?articleID=86&proceedingID=17 db/conf/uai/uai2001.html#ChuSS01