--- On Mon, 31/8/09, moleps islon wrote:
> However what I´m looking for is a way to find the exact
> time analytically from where the curves are parallel. I
> believe the PH assumption is fulfilled before and after
> this point.
You have to be more exact about what is being parallel. 
Usually it is just another way of saying that the PH 
assumption is violated.
-- Maarten
-----------------------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany
http://www.maartenbuis.nl
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