@article{1183530299, author = {Bojanic, R. and DeVore, R.}, title = {A proof of Jackson's theorem}, journal = {Bull. Amer. Math. Soc.}, volume = {75}, number = {5}, year = {1969}, pages = { 364-367}, language = {en}, url = {http://dml.mathdoc.fr/item/1183530299} }
Bojanic, R.; DeVore, R. A proof of Jackson's theorem. Bull. Amer. Math. Soc., Tome 75 (1969) no. 5, pp. 364-367. http://gdmltest.u-ga.fr/item/1183530299/