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For more than a year now, I have been looking for a copy of the following CICMA Concordia preprint :

Author : Helmut Koch Title : Extendible functions Preprint, CICMA Concordia University Department of Mathematics preprint, 1990.

I tried to locate a copy at the Fields Institute and the University of Toronto libraries, without success. I have also written to Concordia, again without success. So I will be very very grateful to anyone who can make a copy (electronic or paper) available to me. My email address is

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why not just ask the author himself? (last name @ – Carlo Beenakker Oct 28 '13 at 9:48
Done, but I have very little hope of getting a reply. – Chandan Singh Dalawat Oct 28 '13 at 10:43
up vote 2 down vote accepted

I finally have a copy of Koch's Extendible functions, thanks to Sazzad Ali Biswas of the University of Hyderabad, who had got it in Berlin from Ernst-Wilhelm Zink.

Needless to say, I'm willing to share it with anyone who is interested.

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Don't forget to accept this answer... – David Roberts Jan 23 '14 at 22:59

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