On a synonymy relation for extensional 1st order theories. Part II. A sufficient criterion for non synonymy. Applications C. Bonotto; A. Bressan — 1983 Rendiconti del Seminario Matematico della Università di Padova
On a synonymy relation for extensional 1st order theories. Part III. A necessary and sufficient condition for synonymy C. Bonotto; A. Bressan — 1984 Rendiconti del Seminario Matematico della Università di Padova
On a synonymy relation for extensional 1st order theories. Part 1. A notion of synonymy C. Bonotto; A. Bressan — 1983 Rendiconti del Seminario Matematico della Università di Padova