@Article{zbMATH03074065,
Author = {Julia {Robinson}},
Title = {{Existential definability in arithmetic}},
FJournal = {{Transactions of the American Mathematical Society}},
Journal = {{Trans. Am. Math. Soc.}},
ISSN = {0002-9947; 1088-6850/e},
Volume = {72},
Pages = {437--449},
Year = {1952},
Publisher = {American Mathematical Society (AMS), Providence, RI},
Language = {English},
Zbl = {0047.24802}
}