@article{ZNSL_2003_300_a15,
     author = {A. P. Itin and A. I. Neishtadt and A. A. Vasil'ev},
     title = {Resonant phenomena in slowly irregular rectangular waveguides},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {173--179},
     year = {2003},
     volume = {300},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2003_300_a15/}
}