Tarasova, E. V. “Inverse Scattering Problem for a Wave Equation With Absorption”. Ukrains’kyi Matematychnyi Zhurnal 59, no. 11 (November 25, 2007): 1580–1584. Accessed April 18, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3413.