@article{ISU_2021_21_3_a1,
     author = {V. A. Kyrov},
     title = {Analytic embedding of {pseudo-Helmholtz} geometry},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {294--304},
     publisher = {mathdoc},
     volume = {21},
     number = {3},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2021_21_3_a1/}
}