Mačiulaitis, Romualdas, and Kęstutis Lukošius. “Calculation Methods of High Temperature Distribution Within Structural Components and Application of These Methods to Fire Resistance Assessment”. Journal of Civil Engineering and Management 7, no. 5 (October 31, 2001): 391-396. Accessed November 22, 2019. https://journals.vgtu.lt/index.php/JCEM/article/view/9221.