@article{1103038049, author = {Ankeny, N. C.}, title = {Criterion for $r$th power residuacity.}, journal = {Pacific J. Math.}, volume = {10}, number = {4}, year = {1960}, pages = { 1115-1124}, language = {en}, url = {http://dml.mathdoc.fr/item/1103038049} }
Ankeny, N. C. Criterion for $r$th power residuacity.. Pacific J. Math., Tome 10 (1960) no. 4, pp. 1115-1124. http://gdmltest.u-ga.fr/item/1103038049/