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On some class of topological structures. (Russian) X InterUnion Algebraic Colloquium, Novosibirsk II (1969), 137-138.
A topological representation of some Brouwerian algebras. (Russian) Confer.in Algebra and Mathematical Logic, Ivanovo, 1970, 134-135.
A structure of quasi-closed elements in closure algebras. (Russian) III Sci. Session, Institute of Aplied Mathematics, Tbilisi, 1970, 25-26.
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On Lukasiewichian algebras. IV Internat. Congress for Logic, Methodology and Philosophy of Science, Bucharest, 1971, 25-26.
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Five critical modal systems (with V. M. Meskhi). (Russian) Theory of Logical Inference, Moscow, 1974, 76-79.
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On some new results in the theory modal and superintuitionistic logics. (Russian) Theory of Logical Inference, Moscow, 1974, 173-184.
On stracture of fibred coproducts in some classes distributive lattices and closure algebras. (Russian) V Conf. Georgian Mathematicians, Tbilisi, 1975, 29-30.
Christmas trees. On free cyclic algebras in some varieties of closure algebras (with R. Grigolia). Polish Acad. Sci. Inst. Philos. Sociol. Bull. Sect. Logic 4 (1975), No. 3, 95-102.
The problem of dualism in the intuitionistic logic and Brouwerian lattices. V Internat.Congress for Logic, Methodology and Philosophy of Science, Canada, 1975, 7-8.
On modal “companion” of superintuitionistic logics. (Russian) VII InterUnion Confer. in Logic and Methodology of Science, Kiev, 1976, 135-136.
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The criterion of Brouwerian and closure algebras to be finitely generated (with R. Grigolia). Polish Acad. Sci. Inst. Philos. Sociol. Bull. Sect. Logic 6 (1977), No. 2, 46-52.
Five critical modal systems (with V. Meskhi). Theoria 43 (1977), No. 1, 52-60.
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Semantic analyse of bi-modal (temporal) systems. (Russian) Logic, Semantics, Methodology, Mecniereba, Tbilisi, 1978, 87-99.
On the theory of modal and superintuitionistic systems. (Russian) Logical Inference (Moscow, 1974), 147-172, Nauka, Moscow, 1979.
On weak filtered products Boolean algebras. (Russian) V InterUnion Conference in Mathematical Logic, Novosibirsk, 1979, 169.
A remark on the category of Stone spaces. (Russian) IX Conf. Georgian Mathematicians, Tbilisi State University, Tbilisi, 1979, 67-68.
On the variety of Grzegorczyk algebras. (Russian) Studies in Nonclassical Logics and Set Theory (Russian), pp. 257-287, Nauka, Moscow, 1979.
Duality for the almost direct products of Boolean. Heyting and closure algebras. VI Internat. Congress for Logic, Methodology and Philosophy of Science, Hannover, FRG, 1979, Abstracts, Section 1-4, 103-106.
Diagonal constructions, the Löb formula and rarefied Cantor spaces. (Russian) Studies in Logic and Semantics, 128-143, Metsniereba, Tbilisi, 1981.
On Hausdorff reducible spaces. (Russian) X Conf. Georgian Mathematicians, Batumi, Sabchota Ajara, 1981, 199.
The category of Heyting algebras is balance-sheet (with R. Grigolia). (Russian) XVII InterUnion Algebraic Conference, Leningrad, 1981, 37-38.
On two modal systems, connected with Peano arithmetic. (Russian) Proc. VIII InterUnion Conf. on Logic and Methodology of Sciences, Moscow, 1982, 130-133.
Weak decomposition of Heyting and Boolean algebras. VI Internat. Congress for Logic, Methodology and Philosophy of Science, Austria, Salzburg, 1983, 71-73.
A locally finite variety of Heyting algebras. (Russian) XVII InterUnion Algebraic Conference, Minsk, 1983, 280-281.
Algebras of logic. (Russian) Ordered Sets and Lattices, No. 7, 15--26, 144, Saratov. Gos. Univ., Saratov, 1983.
On the variety of Grzegorczyk algebras. Sel. Math. Sov. 3 (1984), No. 4, 343-366.
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A classification of the elements in closure algebras – Hausdorff ‘s residue. (Russian) Moscow, 1986, 172-173.
A classification of elements in closure algebras. (Russian) Logical Methods of Analisys of Scientific Knowledge, Mecniereba, Tbilisi, 1986.
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Provability logic with quantifier modalities. Intensional Logics and the Logical Structure of Theories (Russian) (Telavi, 1985), 4-9, Metsniereba, Tbilisi, 1988.
Glivenko’s theorem in the context of diagonalizable algebras. X InterUnion Conf. on Mathematical Logic, Alma-Ata, Gilim, 1990, 172.
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Amended intuitionistic logic and formal provability. X Internat. Congress for Logic, Methodology and Philosophy of Science, Italy, Florence , Published by Comune di Cesena-Assessorato alla Cultura – Centro di Epistemologia “Fe Enriques”, Volume of Abstracts, 1995, 40.
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Provability interpretations of intuitionistic logic. (Russian) Logical Investigations, No. 5 (Russian) (Moscow, 1997), 19-24, Nauka, Moscow, 1998.
Quantification in intuitionistic logic with provability smack. Bull. Sect. Logic 27 (1998), No. 1/2, 26-28.
Creative and critical points in intuitionistic Kripke models and adjoint modalities. (Russian) II Internat. Conference “Smirnov’s Readings”, Moscow, Russ. Acad. Sci, 1999, 78-82.
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Synopsis of fronton theory. (Russian) Logical Investigations, No. 7 (Russian) (Moscow, 1999), 137-147, Nauka, Moscow, 2000.
Weak transitivity – a restitution. (Russian) Logical Investigations, No. 8 (Russian) (Moscow, 2001), 244-255, Nauka, Moscow, 2001.
Godel-Lob modal system – addendum. (Russian) III Intern.Conference “Smirnov’s Rreadings”, Moscow, Russ. Acad. Sci., 2001, 77-99.
A topological interpretation of provability predicate in peano arithmetic and Zermelo-Fraenkel set theory. Modern Algebra and its Applications, Tbilisi, 2002, 16-17.
A modal version of Gödel's second incompleteness theorem, and the McKinsey system. (Russian) Logical Investigations, No. 9 (Russian), 292-300, Nauka, Moscow, 2002.
Godel’s embedding the intuitionistic calculus into modal logic: recent and new observations. IV Intern. Conference “Smirnov’s Readings”, Moscow, Russ. Acad. Sci., 2003, 72-75.
Intuitionistic logic and modality via topology. Ann. Pure Appl. Logic 127 (2004), No. 1-3, 155-170.