@article{ZNSL_1985_144_a16,
     author = {A. Hurramov},
     title = {Extreme quadratic forms of a special type in $n$ variables $(n\leq 28)$.},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {167--172},
     publisher = {mathdoc},
     volume = {144},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1985_144_a16/}
}