@article{AL_1970_9_4_a0, author = {N. V. Beljakin}, title = {Generalized computations and second order arithmetic}, journal = {Algebra i logika}, pages = {375--405}, publisher = {mathdoc}, volume = {9}, number = {4}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1970_9_4_a0/} }