Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{KYB_1979__15_2_a2, author = {\v{Z}\'ak, Stanislav}, title = {A {Turing} machine space hierarchy}, journal = {Kybernetika}, pages = {--121}, publisher = {mathdoc}, volume = {15}, number = {2}, year = {1979}, mrnumber = {542056}, zbl = {0421.68050}, language = {en}, url = {http://geodesic.mathdoc.fr/item/KYB_1979__15_2_a2/} }
Žák, Stanislav. A Turing machine space hierarchy. Kybernetika, Tome 15 (1979) no. 2, p. 121. http://geodesic.mathdoc.fr/item/KYB_1979__15_2_a2/