1.
HIRATA, Jun, IKOMA, Norihisa and TANAKA, Kazunaga. Nonlinear scalar field equations in $\mathbb{R}^{N}$: mountain pass and symmetric mountain pass approaches. Topological Methods in Nonlinear Analysis. Online. 23 April 2010. Vol. 35, no. 2, pp. 253 - 276. [Accessed 3 July 2024].