<HTML><HEAD> <META charset=US-ASCII http-equiv=Content-Type content="text/html; cha= rset=US-ASCII"> <META content="MSHTML 6.00.2800.1170" name=GENERATOR></HEAD> <BODY style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; BACKGROUND-COLOR: #fffff= f"> <DIV> <DIV>In a message dated 2/18/04 2:56:57 PM Central Standard Time, hgreeley@s= tanford.edu writes:</DIV> <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue = 2px solid"><FONT face=Arial>Even though it goes a bit far in following the= theory, Ed McMorrow's book <BR>has the best (so far) examination of the var= iables.<BR><BR>Best.<BR><BR>Horace</FONT></BLOCKQUOTE></DIV> <DIV>I don't have his book. What does Ed have to say about this?</DIV> <DIV> </DIV> <DIV>Wim </DIV></BODY></HTML>