I don't think you do need the agreement. But it is the tradition of 
science to always give attribution to the creators of the ideas. So 
"use and attribute".

Cheers,

Alan

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At 7:08 PM +0200 5/25/03, Hans Nikolaus Beck wrote:
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>Hi,
>
>if I want to implement  an algorithm or visualization technique in 
>an open source project  (in fact: squeak) which was presented  in a 
>public paper (in this case IEEE Computer Graphics & Visualization), 
>do I need the agreement of the authors ? That's a question related 
>to the current situation of software patents and copyright as given 
>by law of USA.  My feeling says: I need the agreement.
>
>Greetings
>
>
>Hans
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