@article{1183739734, author = {Hay, Louise}, title = {Boolean Combinations of R.E. Open Sets}, journal = {J. Symbolic Logic}, volume = {41}, number = {1}, year = {1976}, pages = { 235-238}, language = {en}, url = {http://dml.mathdoc.fr/item/1183739734} }
Hay, Louise. Boolean Combinations of R.E. Open Sets. J. Symbolic Logic, Tome 41 (1976) no. 1, pp. 235-238. http://gdmltest.u-ga.fr/item/1183739734/