Stefanovic Nedeljko (2023) Alternatives to the Halpern-Lauchli theorem, ANNALS OF PURE AND APPLIED LOGIC, vol. 174, br. 9, str. - (Article) Stefanovic Nedeljko,Milosevic Milos (2010) A very simple proof of Pascal's hexagon theorem and some applications, PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-MATHEMATICAL SCIENCES, vol. 120, br. 5, str. 619-629 (Article)