@article{1183741543, author = {Griffor, E. R. and Normann, D.}, title = {The Definability of $\mathrm{E}(\alpha)$}, journal = {J. Symbolic Logic}, volume = {49}, number = {1}, year = {1984}, pages = { 437-442}, language = {en}, url = {http://dml.mathdoc.fr/item/1183741543} }
Griffor, E. R.; Normann, D. The Definability of $\mathrm{E}(\alpha)$. J. Symbolic Logic, Tome 49 (1984) no. 1, pp. 437-442. http://gdmltest.u-ga.fr/item/1183741543/