### Bibliography

#### Works connected to ~~Virgil William Adkisson~~

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Planar graphs whose homeomorphisms can all be extended for any mapping on the sphere,” Am. J. Math. 59 : 4 (October 1937), pp. 823–832. MR 1507285 JFM 63.1158.05 Zbl 0017.42703 article

: “Fixed points and the extension of the homeomorphisms of a planar graph,” Am. J. Math. 60 : 3 (July 1938), pp. 611–639. MR 1507342 JFM 64.0596.03 Zbl 0019.14201 article

: “Extending maps of plane Peano continua,” Duke Math. J. 6 : 1 (1940), pp. 216–228. MR 0001345 JFM 66.0970.03 Zbl 0026.36302 article

: “Extensions of homeomorphisms on the sphere,” pp. 223–236 in Lectures in topology (University of Michigan, Ann Arbor, MI, 24 June–6 July 1940). Edited by R. L. Wilder and W. L. Ayres. University of Michigan Press (Ann Arbor, MI), 1941. MR 0005304 Zbl 0063.03694 incollection

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