OKRAJNI, J. and WACŁAWIAK, K. 2019. The Impact of Temperature Oscillations and Heat Transfer Conditions in Thick-Walled Elbows and Tubes on the Local Stress-Strain Behaviour During the Fast Start-Up of Power Boilers. Engineering Transactions. 67, 4 (Dec. 2019), 579–591. DOI:https://doi.org/10.24423/EngTrans.896.20191210.