Sokołowski, M. and Turska-Kłębek, E. (1983) “On the Approximate Evaluation of Interaction of Cracks in Elastic Media”, Engineering Transactions, 31(1), pp. 115–150. Available at: https://et3.ippt.pan.pl/index.php/et/article/view/1930 (Accessed: 9 June 2025).