@article{CMFD_2022_68_3_a7,
     author = {V. A. Strauss},
     title = {Models of self-adjoint and unitary operators in {Pontryagin} spaces},
     journal = {Contemporary Mathematics. Fundamental Directions},
     pages = {522--552},
     publisher = {mathdoc},
     volume = {68},
     number = {3},
     year = {2022},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CMFD_2022_68_3_a7/}
}