@article{DM_1999_11_3_a6,
     author = {M. I. Tikhomirova and V. P. Chistyakov},
     title = {Some characteristics of two-stage designs of experiments},
     journal = {Diskretnaya Matematika},
     pages = {83--90},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1999_11_3_a6/}
}