1. Veles P 1989 Mechanical properties and material testing. Bratislava, ALFA (in Slovak)
2. Pešek L, Oravec K and Boháč I 1994 Resistance to stable crack growth in welded joints of microalloyed strip steel. In: Zváranie 94, 11.-12.5.1994, Bratislava, Slovakia (in Slovak)
3. Pešek L and Boháč I 1994 Resistance to stable crack growth in welded joints rated by a one-sample method. In: Materiál v inžinierskej praxi 94, 16.-18.5.1994, Herľany, Slovakia (in Slovak)
4. Pešek L and Oravec K 1994 Patterns of stable crack growth in microalloyed steel strips. Oceľ. Plechy 21: 19–25 (in Slovak)
5. Saxena A 1998 Nonlinear fracture mechanics for engineers. Boca Raton, CRC Press