@techreport{NBERw13134,
 title = "Instrumental Variables Estimation of Heteroskedastic Linear Models Using All Lags of Instruments",
 author = "Kenneth D. West and Ka-fu Wong and Stanislav Anatolyev",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Working Paper Series",
 number = "13134",
 year = "2007",
 month = "May",
 URL = "http://www.nber.org/papers/w13134",
}