@article{ZNSL_2021_504_a3,
     author = {Kh. D. Ikramov},
     title = {Special congruences of symmetric and {Hermitian} matrices and their invariants},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {54--60},
     year = {2021},
     volume = {504},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2021_504_a3/}
}