@article{TRSPY_2021_313_a7,
     author = {A. S. Holevo},
     title = {Structure of a {General} {Quantum} {Gaussian} {Observable}},
     journal = {Informatics and Automation},
     pages = {78--86},
     publisher = {mathdoc},
     volume = {313},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2021_313_a7/}
}