@article{MM_2021_33_4_a1,
     author = {A. S. Bugaev and A. G. Tatashev and M. V. Yashina},
     title = {Spectrum of a continuous closed symmetric chain with an arbitrary number of contours},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {21--44},
     publisher = {mathdoc},
     volume = {33},
     number = {4},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_2021_33_4_a1/}
}