@article{MZM_1997_62_5_a1,
     author = {E. G. Anisova},
     title = {Null-quadrics of codimension 4 in $\mathbb C^7$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {657--665},
     publisher = {mathdoc},
     volume = {62},
     number = {5},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1997_62_5_a1/}
}