@article{IM2_2022_86_4_a0,
     author = {M. I. Belishev and A. V. Kaplun},
     title = {Canonical form of the $C^*$-algebra of eikonals related to a~metric graph},
     journal = {Izvestiya. Mathematics},
     pages = {621--666},
     year = {2022},
     volume = {86},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2022_86_4_a0/}
}