Protected by the Protestant Church in East Germany, opposition movements against the regime in the GDR formed and in 1987 Wolfgang Ullman became a member of one of these group, the “Initiative for the Refusal of Practice and Principle of the Demarcation”.
Wolfgang Ullmann: The psychological Trinitätslehre August in as a theological condition of the medieval ethics. Goettingen, Theol. F., Diss. v. 11. Nov. 1954
Friedrich de Boor, Wolfgang Ullmann (Hrsg.): Sources: Selected texts from D. History christl. Church. Berlin, Evang. Verl. - Institute, 1980
Wolfgang Ullmann: Preparatory school of the democracy: Church and round table. Berlin, Berlin: Evang. Verl. - Anst., 1990, ISBN 3-374-01356-2
Wolfgang Ullmann: Democracy - now or never: Perspectives of the justice. Munich, Kyrill and Method Verl., 1990, ISBN 3-927527-24-6
Bernhard Maleck, Wolfgang Ullmann: I will not be silent: Discussions with Wolfgang Ullmann, Berlin, Dietz, 1991, ISBN 3-320-01753-5
Bernhard Maleck, Wolfgang Ullmann: Condition and parliament. A contribution to the condition discussion, Berlin, Dietz, 1992, ISBN 3-320-01775-6
Wolfgang Ullmann: Future clearing-up. A stocktaking after the end of the utopias. Berlin, context Verl., 1995, ISBN 3-931337-10-3
Wolfgang Ullmann: Patience, loves Dimut!: Brussels letter. Leipzig, forum Verl., 1998, ISBN 3-931801-04-7