@article{ZNSL_2015_439_a8,
     author = {Kh. D. Ikramov},
     title = {How to check whether given square matrices are congruent?},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {99--106},
     year = {2015},
     volume = {439},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2015_439_a8/}
}