- The hydrobiological research in the TRIANGL (Praque 10)2002 | Faculty of Education
- The heart of a triangle2013 | Faculty of Mathematics and Physics
- Three inequalities in a right triangle2012 | Faculty of Mathematics and Physics
- Straights and conics in triangles2012 | Faculty of Education
- Circles in Pythagorian triangles2010 | Faculty of Education
- Adams' Circle and mutually similar triangles belonging to it2019 | Faculty of Mathematics and Physics
- An enumeration of equilateral triangle dissections2010 | Faculty of Mathematics and Physics
- Triangles with integer lengths of sides2010 | Faculty of Education
- Planar 4-critical graphs with four triangles2014 | Faculty of Mathematics and Physics
- New constructions of triangle from \alpha, b-c, t_A2018 | Faculty of Mathematics and Physics
- Thought-provoking teaching: Triangle and parallelogram2021 | Faculty of Education
- A topological characterization of the Sierpinski triangle2012 | Faculty of Mathematics and Physics
- On a certain property of sides and angles in a triangle2010 | Faculty of Mathematics and Physics
- Stewart's theorem and triangle transversals2011 | Faculty of Mathematics and Physics
- Old Norse Love Triangles Made New2017 | Faculty of Arts
- Triangles in arrangements of points and lines in the plane2011 | Faculty of Mathematics and Physics
- Triangle in teaching geometry - few unusual problems +12020 | Faculty of Mathematics and Physics
- Triangles are good for nothing (still)2022 | Faculty of Education
- Malfatti’s problem for an equilateral triangle2023 | Faculty of Mathematics and Physics
- Heights and axes in triangles2020 | Faculty of Mathematics and Physics
- Coloring triangle-free graphs on surfaces +22007 | Faculty of Mathematics and Physics
- Counting flags in triangle-free digraphs2009 | Faculty of Mathematics and Physics
- Characterization of 4-critical triangle-free toroidal graphs2022 | Faculty of Mathematics and Physics
- Monochromatic triangles in two-colored plane2009 | Faculty of Mathematics and Physics
- Flexibility of triangle-free planar graphs2021 | Faculty of Mathematics and Physics
- Induced trees in triangle-free graphs2007 | Faculty of Mathematics and Physics
- Do Triangle-Free Planar Graphs have Exponentially Many 3-Colorings?2017 | Faculty of Mathematics and Physics