@article{VMJ_2024_26_4_a5,
     author = {S. V. Efimov},
     title = {On the index of a bisingular operator with an involutive shift},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
     pages = {66--77},
     publisher = {mathdoc},
     volume = {26},
     number = {4},
     year = {2024},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMJ_2024_26_4_a5/}
}