@article{PDMA_2012_5_a27,
     author = {N. V. Medvedev and S. S. Titov},
     title = {Problems of almost threshold secret sharing schemes},
     journal = {Prikladnaya Diskretnaya Matematika. Supplement},
     pages = {53--54},
     publisher = {mathdoc},
     number = {5},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDMA_2012_5_a27/}
}