Career
Hammerstiel is internationally recognized through numerous awards. He is the author of "Von Ikonen und Ratten: Eine Banater Kindheit 1939 - 1949. With 32 woodcuts. Brandstaetter: Vienna, 1999.
Und illustrater of several books including "Des Bischofs Kleid" by Luisa Owens (2013).
1973 Vienna, Vienna Künstlerhaus
1988 New York, Austrian Institute
1991 Kairo, Museum of Modern Art
1993 Vienna, Vienna Künstlerhaus
2002 Vršac, National museum
2006 Vienna, Leopold Museum
2007 Vienna, Vienna Künstlerhaus
2008 Brüssel, Representation of Baden-Württemberg
2009 Vienna, Leopold Museum.