@article{1183738354, author = {Barback, Joseph}, title = {Review: Erik Ellentuck, Solution of a Problem of R. Friedberg}, journal = {J. Symbolic Logic}, volume = {37}, number = {1}, year = {1972}, pages = { 611-612}, language = {en}, url = {http://dml.mathdoc.fr/item/1183738354} }
Barback, Joseph. Review: Erik Ellentuck, Solution of a Problem of R. Friedberg. J. Symbolic Logic, Tome 37 (1972) no. 1, pp. 611-612. http://gdmltest.u-ga.fr/item/1183738354/