I'll check my billing! Thanks for the
warning!

Warm regards, and thanks for the book,

Darrell

_____________________________________________
Darrell Duffie
mail  GSB Stanford CA 94305-5015 USA
phone 650 723 1976
fax   650 725 7979
email duffie@stanford.edu
web   http://www.stanford.edu/~duffie/
_____________________________________________