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 August 12, 2025. https://mla.vilniustech.lt/index.php/JCEM/article/view/9327.