ototsky/ototskyhome.html">http://www.mgn.ru/~ototsky/ototskyhome.html</A>
Chief Specialist of the Computer Center,
Magnitogorsk Iron&amp;Steel Works (MMK)
<A  HREF="http://www.mmk.ru">http://www.mmk.ru</A>
Russia
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Leonid,

Thank you for your remarks and references.
Maybe it would help to give some literature
citations and especially e-links to material
on the &quot;duality principle&quot; point of view, as
it sounds like this might also link up with
many