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@article{GMJ_1997__4_1_47910, author = {Oniani, G. and Zerekidze, T.}, title = {On differential bases formed of intervals.}, journal = {Georgian Mathematical Journal}, pages = {81--100}, publisher = {mathdoc}, volume = {4}, number = {1}, year = {1997}, zbl = {0892.28004}, language = {en}, url = {http://geodesic.mathdoc.fr/item/GMJ_1997__4_1_47910/} }
Oniani, G.; Zerekidze, T. On differential bases formed of intervals.. Georgian Mathematical Journal, Tome 4 (1997) no. 1, pp. 81-100. http://geodesic.mathdoc.fr/item/GMJ_1997__4_1_47910/