@article{Borisyuk_2007 author = {A. O. Borisyuk}, title = {Study of the Flow and Acoustic Fields in a Rigid-Walled Channel of Circular Cross-Section with a Local Axisymmetric Narrowing: A Theory}, journal = {International Journal of Fluid Mechanics Research}, issn = {2152-5102}, year = {2007}, volume = {34}, number = {2}, pages = {99--114} }