Journal of Mathematical Analysis and ApplicationsVolume 28, Issue 3, December 1969, Pages 581-589Uniqueness and comparison of harmonic functions under nonlinear boundary conditionsAuthor links open overlay panelJ.M. CushingShow moreShareCitehttps://doi.org/10.1016/0022-247X(69)90010-9Get rights and contentUnder an Elsevier user licenseopen archivePrevious article in issueNext article in issueRecommended articlesCited by (0)Copyright © 1969 Published by Elsevier Inc.