Open Marxism 2: Theory and Practice was released with volume 1 in 1992. The introduction to volume 2 is included below along with the full PDF. For a fuller overview of Open Marxism, see the ...
The Annals of Statistics, Vol. 19, No. 2 (Jun., 1991), pp. 797-816 (20 pages) Biased sampling regression models were introduced by Jewell, generalizing the truncated regression model studied by ...