References
[1] P. Concus, and R.
Finn, On capillary free surfaces in the
absence of gravity
[3] P. Concus, and R. Finn, Continuous and discontinuous disappearance
of capillary surfaces, in Variational Methods for Free Surface Interfaces
[4] Introduction
to Capillarity and Wetting Phenomena, https://application.wiley-vch.de/books/sample/3527412298_c01.pdf