@article{DA_2013_20_4_a4,
     author = {D. I. Kovalevskaya and F. I. Solov'eva},
     title = {Steiner quadruple systems of small ranks and extended perfect binary codes},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {46--64},
     publisher = {mathdoc},
     volume = {20},
     number = {4},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_2013_20_4_a4/}
}