[1] Yehoshua Bar-Hillel: Language. In: Scientific Thought, Mouton/Unesco, The Hague 1972, 107-128.

[2] Noam Chomsky: Syntactic Structures. Mouton, The Hague 1957.

[3] Noam Chomsky: Studies on Semantics in Generative Grammar. Mouton, The Hague 1972.

[4] Östen Dahl: On Points of Reference. Logical grammar reports of Univ. of Göteborg, 1972.

[5] Gottlob Frege: Über Sinn und Bedeutung. Zeitschrift für Philosophic und philosphische Kritik 100 (1892), 25-50.

[6] N. Jardine C. J. Jardine: Model Theoretic Semantics and Natural Language. Presented on conference on formal semantics in Cambridge, 1973.

[7] Petr Jirků: Theory of Logical Consequence. Acta Universitatis Carolinae, in press.

[8] Richard Montague: Pragmatics and Intensional Logic. Synthese 22 (1970), 68-94.

[9] Richard Montague: Universal Grammar. Theoria XXXVI (1970), 373-398. MR 0307873

[10] Pavel Tichý: An Approach to Intensional Analysis. NOÚS V (1971). No. 3.