@article{1183547849, author = {Odifreddi, Piergiorgio}, title = {Strong reducibilities}, journal = {Bull. Amer. Math. Soc. (N.S.)}, volume = {4}, number = {1}, year = {1981}, pages = { 37-86}, language = {en}, url = {http://dml.mathdoc.fr/item/1183547849} }
Odifreddi, Piergiorgio. Strong reducibilities. Bull. Amer. Math. Soc. (N.S.), Tome 4 (1981) no. 1, pp. 37-86. http://gdmltest.u-ga.fr/item/1183547849/