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@article{AMLG_1975__17_137899, author = {Ch.E. Hughes and W.E. Singletary}, title = {Combinatorial systems defined over one- and two-letter alphabets.}, journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung}, pages = {25--34}, publisher = {mathdoc}, volume = {17}, year = {1975}, zbl = {0336.02035}, url = {http://geodesic.mathdoc.fr/item/AMLG_1975__17_137899/} }
TY - JOUR AU - Ch.E. Hughes AU - W.E. Singletary TI - Combinatorial systems defined over one- and two-letter alphabets. JO - Archiv für mathematische Logik und Grundlagenforschung PY - 1975 SP - 25 EP - 34 VL - 17 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AMLG_1975__17_137899/ ID - AMLG_1975__17_137899 ER -
Ch.E. Hughes; W.E. Singletary. Combinatorial systems defined over one- and two-letter alphabets.. Archiv für mathematische Logik und Grundlagenforschung, Tome 17 (1975), pp. 25-34. http://geodesic.mathdoc.fr/item/AMLG_1975__17_137899/