Karczyński, Łukasz. “Loss on „Toxic” Currency Options and Forward Contracts As a Tax-Deductible Expense in Corporate Income Tax – General Issues”. Financial Law Review 1, no. 1 (March 16, 2016): 11–22. Accessed May 14, 2024. https://czasopisma.bg.ug.edu.pl/index.php/flr/article/view/931.