ISSI Newsletter #4 is out!

We are glad to inform you that the 4th number of the ISSI Newsletter has come out.
Content:
- Editorial (B. Schlemmer)
- A look back for 2005 (M. Meyer)
- News, Announcements
- A Centennial 1906-2006 (B. Godin)
- Escher Staircases Dwarfed (R.Rousseau & H. Small)
- Book Review (A. Basu)
- H-Index for Price Medalists (W. Glänzel & O. Persson)