@article{DM_1991_3_2_a1,
     author = {O. V. Denisov},
     title = {An asymptotic formula for the number of correlation-immune {Boolean} functions of order~$k$},
     journal = {Diskretnaya Matematika},
     pages = {25--46},
     year = {1991},
     volume = {3},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1991_3_2_a1/}
}