- Planar 4-critical graphs with four triangles2014 | Matematicko-fyzikální fakulta
- Irreducible 4-critical triangle-free toroidal graphs2020 | Matematicko-fyzikální fakulta
- 4-CRITICAL GRAPHS ON SURFACES WITHOUT CONTRACTIBLE ({= 4)-CYCLES2014 | Matematicko-fyzikální fakulta
- FINE STRUCTURE OF 4-CRITICAL TRIANGLE-FREE GRAPHS III. GENERAL SURFACES2018 | Matematicko-fyzikální fakulta
- Characterization of 4-critical triangle-free toroidal graphs2022 | Matematicko-fyzikální fakulta
- Three-coloring triangle-free graphs on surfaces IV. Bounding face sizes of 4-critical graphs2021 | Matematicko-fyzikální fakulta
- FINE STRUCTURE OF 4-CRITICAL TRIANGLE-FREE GRAPHS I. PLANAR GRAPHS WITH TWO TRIANGLES AND 3-COLORABILITY OF CHAINS2018 | Matematicko-fyzikální fakulta
- Three-coloring triangle-free graphs on surfaces II. 4-critical graphs in a disk2018 | Matematicko-fyzikální fakulta
- FINE STRUCTURE OF 4-CRITICAL TRIANGLE-FREE GRAPHS II. PLANAR TRIANGLE-FREE GRAPHS WITH TWO PRECOLORED 4-CYCLES2017 | Matematicko-fyzikální fakulta
- Three-coloring triangle-free graphs on surfaces III. Graphs of girth five2020 | Matematicko-fyzikální fakulta
- ON DENSITY OF Z3-FLOW-CRITICAL GRAPHS2023 | Matematicko-fyzikální fakulta