Przybylski, Bronisław: The tangent and the cotangent vector square of a pointed differential square. (English). In: Bureš, J. and Souček, V. (eds.): Proceedings of the Winter School "Geometry and Physics". Circolo Matematico di Palermo, Palermo, 1993. pp. [163]-182

Banaschewski, B.: Projective covers in categories of topological spaces and topological algebras. (English). In: Franklin, S. P., Frolík, Z. and Koutník, V. (eds.): General Topology and Its Relations to Modern Analysis and Algebra. Proceedings of the Kanpur topological conference, 1968. Academia Publishing House of the Czechoslovak Academy of Sciences, Praha, 1971. pp. [63]-91

Jayne, J. E.: Generation of Baire sets. (English). In: Novák, Josef (ed.): General topology and its relations to modern analysis and algebra IV, Proceedings of the fourth Prague topological symposium, 1976. Part B: Contributed Papers. Society of Czechoslovak Mathematicians and Physicist, Praha, 1977. pp. 187-194

Jarník, Vojtěch: Bernard Bolzano (October 5, 1781 - December 18, 1848). (English). In: Jarník, Vojtěch; Novák, Josef (other); Folta, Jaroslav (other); Jarník, Jiří (other): Bolzano and the Foundations of Mathematical Analysis. (English). Praha: Society of Czechoslovak Mathematicians and Physicists, 1981. pp. 82-86