Lookinf for an inerview of Zelazny about Spikards !

Hi
I am a french fan of Zelazny and I am searching for an interview of
Zelazny in a Sci Fi compilation or something like that which talks
about the relation between spikards and the creation of the 3
Reflections of the Pattern in Amber
Have ou heard something about it because I am working on it for a book
???

Here is an extract about this interview :
I once read in article in some sci-fi collection of short stories
that had an interview with RZ where he answered a number of questions
about Amber. In the article it was said that Greyswandir had once been
a
spikard in the possesion of Dworkin at the time he drew the Pattern.
It's presense, as well as the presense of two other Spikards were kind
of responsible for the creation of the reflections of the 3 diffrent
Patterns in Amber, Rebma and Tir. This is where Greyswandir's
connection
with Tir comes from.

Thank you for all and happy new year !!!