@article{ZNSL_2021_506_a12,
     author = {S. A. Nazarov and K. M. Ruotsalainen and P. J. Uusitalo},
     title = {Scattering coefficients and threshold resonances in a waveguide with inflating resonator},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {175--209},
     publisher = {mathdoc},
     volume = {506},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2021_506_a12/}
}