Carini, A., Diligenti, M. and Maier, G. (1997) “Symmetric boundary integral formulations of transient heat conduction: saddle-point theorems for BE analysis and BE-FE coupling”, Archives of Mechanics, 49(2), pp. 253–283. Available at: http://am.ippt.gov.pl/index.php/am/article/view/v49p253 (Accessed: 17 January 2026).