Makoto Sakamoto, Katsushi Inoue. Three-Dimensional Alternating Turing Machines with Only Universal States. Inf. Sci., 95(3):155-190, 1996.
@article{SakamotoI96, title = {Three-Dimensional Alternating Turing Machines with Only Universal States}, author = {Makoto Sakamoto and Katsushi Inoue}, year = {1996}, researchr = {https://researchr.org/publication/SakamotoI96}, cites = {0}, citedby = {0}, journal = {Inf. Sci.}, volume = {95}, number = {3}, pages = {155-190}, }