Baušys, Romualdas. “Error Estimator for Acoustic problems/Akustikos uždavinių Paklaidų įvertinimas”. Journal of Civil Engineering and Management 5, no. 1 (February 28, 1999): 22-27. Accessed July 6, 2024. https://jau.vgtu.lt/index.php/JCEM/article/view/9327.