@article{DM_2009_21_4_a2,
     author = {O. V. Zubkov},
     title = {Finding and estimating the number of repetition-free {Boolean} functions over the elementary basis in the form of a~convergent series},
     journal = {Diskretnaya Matematika},
     pages = {30--38},
     publisher = {mathdoc},
     volume = {21},
     number = {4},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2009_21_4_a2/}
}