She has worked with Raoul Bunschoten, Caruso St John, David Chipperfield, Tony Fretton, Zaha Hadid, Zvi Hecker, John Hejduk, Coop Himmelb(l)au, Daniel Libeskind, Peter Cook Sauerbruch Hutton, Peter Zumthor, Josef Paul Kleihues and many others, besides publishing books on buildings by Le Corbusier, Alvar Aalto, Sigurd Lewerentz, and Dimitris Pikionis .
In 1997, Ullman completed a synagogue memorial in collaboration with Zvi Hecker and Eyal Weizmann, commemorating the former Lindenstraße synagogue in Kreuzberg.
Yitzhak Ben-Zvi | Chris Hecker | Zvi Hecker | Tim Hecker | Isaac Hecker | Hecker | Maximilian Hecker | Friedrich Hecker | Zvi Zamir | Zvi Nishri | Zvi Hercowitz | Zvi Elimelech Halberstam | Zvi Bar | Guy Hecker | Frank J. Hecker | Beit Zvi |