Walter A. Deuber, Wolfgang Thumser. A Combinatorial Approach to Complexity Theory via Ordinal Hierarchies. Combinatorics, Probability & Computing, 3:177-190, 1994.
@article{DeuberT94, title = {A Combinatorial Approach to Complexity Theory via Ordinal Hierarchies}, author = {Walter A. Deuber and Wolfgang Thumser}, year = {1994}, tags = {systematic-approach}, researchr = {https://researchr.org/publication/DeuberT94}, cites = {0}, citedby = {0}, journal = {Combinatorics, Probability & Computing}, volume = {3}, pages = {177-190}, }