Voir la notice de l'article provenant de la source Math-Net.Ru
@article{AL_1973_12_1_a0, author = {N. V. Beljakin}, title = {A certain class of recursive hierarchies}, journal = {Algebra i logika}, pages = {3--21}, publisher = {mathdoc}, volume = {12}, number = {1}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1973_12_1_a0/} }
N. V. Beljakin. A certain class of recursive hierarchies. Algebra i logika, Tome 12 (1973) no. 1, pp. 3-21. http://geodesic.mathdoc.fr/item/AL_1973_12_1_a0/