1. Foundations of Mathematical Logic;Curry,1963
2. Intuitionistic tableaux and dialogues;Felscher;The present state of the problem of foundations of mathematics,1981
3. Dialogues as a foundation for intuitionistic logic;Felscher,1985
4. Hypothesendialoge, konstruktiver Sequenzenkalkul und die Rechtfertigung von Dialog-rahmenregeln;Haas,1980
5. Logische Propädeutik;Kamlah,1967