Goncharsky, A.V., S.Y. Romanov, and S.A. Kharchenko. 2006. “The Inverse Problem of Acoustic Diagnosis for Three-Dimensional Media”. Numerical Methods and Programming (Vychislitel’nye Metody I Programmirovanie) 7 (7):113-21. https://en.num-meth.ru/index.php/journal/article/view/199.