stability. bending beam. critical momentBaláž, Ivan, 1948- Stability of beams under force F in middle of span combined with end moments Ma and Mb. Koleková, Yvonna, 1959-. Partov, Doncho In: Engineering Mechanics 2022. -- 1. vyd.. -- 420 s.. -- ISSN 1805-8248. -- 978-80-86246-48-2 Engineering Mechanics 2022. -- Prague : Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, 2022. -- S. 21-24.