@article{DM_1990_2_4_a5,
     author = {Yu. V. Yatsishin},
     title = {A~lower bound on the register complexity of the computation of terms},
     journal = {Diskretnaya Matematika},
     pages = {60--62},
     publisher = {mathdoc},
     volume = {2},
     number = {4},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1990_2_4_a5/}
}