@article{10.1142/S2591728518500299, author = {Moheit, Lennart and Marburg, Steffen}, title = {Normal Modes and Modal Reduction in Exterior Acoustics}, journal = {Journal of Theoretical and Computational Acoustics}, year = {2018}, volume = {26}, number = {03}, pages = {1850029}, doi = {10.1142/s2591728518500299}, }