@article { author = {Petit, G. and Dowe, D. L.}, title = {Rings of functions with integer derivatives at x=1}, journal = {Bulletin of the Iranian Mathematical Society}, volume = {30}, number = {No. 1}, pages = {53-67}, year = {2011}, publisher = {Iranian Mathematical Society (IMS)}, issn = {1017-060X}, eissn = {1735-8515}, doi = {}, abstract = {}, keywords = {Real functions,Integer derivatives}, url = {http://bims.iranjournals.ir/article_117.html}, eprint = {http://bims.iranjournals.ir/article_117_f7a125e8b3149ce449bd7f1431e08473.pdf} }