Connection Between Internal Structural Stresses of the Ist and the IInd kind and Operational Reliability of the Boiler Heating SurfaceLyudmila Lyubimova, Roman Tabakaev, Alexander Tashlykov, Alexander Zavorin and Vadim ZyubanovEPJ Web of Conferences, 110 (2016) 01037DOI: https://doi.org/10.1051/epjconf/201611001037