@article{ZNSL_1997_241_a2, author = {G. V. Davydov and I. M. Davydova}, title = {Number representations of satisfiability}, journal = {Zapiski Nauchnykh Seminarov POMI}, pages = {72--96}, publisher = {mathdoc}, volume = {241}, year = {1997}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/ZNSL_1997_241_a2/} }