@article{VUU_2019_29_4_a4,
     author = {V. A. Kyrov},
     title = {Analytical embedding of three-dimensional {Helmholtz-type} geometries},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {532--547},
     publisher = {mathdoc},
     volume = {29},
     number = {4},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2019_29_4_a4/}
}