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@article{DAN_1979_245_4_a2, author = {Yu. A. Mamatov}, title = {Concerning a principle for obtaining lower bounds on the complexity of formulas}, journal = {Doklady Akademii Nauk}, pages = {782--784}, publisher = {mathdoc}, volume = {245}, number = {4}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1979_245_4_a2/} }
Yu. A. Mamatov. Concerning a principle for obtaining lower bounds on the complexity of formulas. Doklady Akademii Nauk, Tome 245 (1979) no. 4, pp. 782-784. http://geodesic.mathdoc.fr/item/DAN_1979_245_4_a2/