@Article{zbMATH02550901,
Author = {H. {Whitney}},
Title = {{Non-separable and planar graphs}},
FJournal = {{Transactions of the American Mathematical Society}},
Journal = {{Trans. Am. Math. Soc.}},
ISSN = {0002-9947; 1088-6850/e},
Volume = {34},
Pages = {339--362},
Year = {1932},
Publisher = {American Mathematical Society (AMS), Providence, RI},
Language = {English},
Zbl = {58.0608.01}
}